JPWO2011118132A1 - Lamp with solid-state light emitting element as light source - Google Patents

Abstract

Provided is a lamp that uses a solid light emitting element as a light source and has a simple structure and a low-cost structure, but has improved heat dissipation. The lamp (100) uses a solid light emitting element as a light source. The base (110) is attached to an external device when used. The housing (120) is made of a translucent material and connected to the base (110). The light emitting module (130) includes one or a plurality of solid light emitting elements, and is installed so that the main light emitting side (the lower side in FIG. 1) is in close contact with the inner wall of the housing (120). Further, the gap between the housing (120) and the light emitting module (130) may be filled with a heat conductive material (140) having both translucency and heat conductivity.

Description

  The present invention relates to a lamp using a solid light emitting element such as an LED or an EL as a light source, and more specifically to a technique for further improving heat dissipation.

In recent years, with the improvement of semiconductor technology, there is an increasing demand for lamps that use solid-state light-emitting elements as light sources.
Since the lamp has a low power consumption and a long life, it greatly contributes to the promotion of energy saving and is expected to spread explosively in the future.

A conventional LED lamp is disclosed in Patent Document 1.
According to the LED lamp of Patent Document 1, by providing the heat dissipation member including a plurality of plate portions arranged in parallel to each other and connected to each other, “the unit of the heat dissipation member by the plurality of plate portions” is provided. Since the surface area per weight is large, the heat dissipation member has a relatively large contact area with the outside air even if it is relatively lightweight. Can be realized. "

JP 2009-277483 A

Solid light-emitting elements such as LEDs and EL tend to have lower luminous efficiency as the temperature rises, and improving heat dissipation is a problem.
The main cause of the temperature rise of the solid state light emitting device is the first cause that the electric power not changed to light in the solid state light emitting device is changed to heat, and the light absorbed by the wavelength conversion member such as the phosphor is converted. It can be considered as a second cause that the light that has not been turned into heat. According to the actual measurement by the inventors, the temperature on the light extraction side, which is largely influenced by heat generation mainly due to the second cause, is higher than that on the opposite side of the light extraction side, which is mainly affected by heat generation due to the first cause. Was found to be expensive.
As a countermeasure against the first cause, there is an example in which a heat dissipating member is disposed on the opposite side of the light extraction side as in Patent Document 1 to actively dissipate heat. Priority is given to heat dissipation related to the cause. However, there is no example of preferentially taking measures against the second cause.
In order to improve heat dissipation, a metallic heat dissipation member (corresponding to the heat dissipation member 20 of Patent Document 1) is generally disposed on the side opposite to the light extraction side. However, the use of a heat dissipation member increases the weight of the lamp by that amount, which limits the mounting of the lamp on the fixture due to the increase in weight, increases the work load during installation and replacement, and increases the cost of transportation. There is a problem that there are many inconvenient points such as.
Further, in the case where the space between the light emitting module and the inner wall of the housing is hollow, reflection at the interface between the light extraction surface and the hollow portion and at the interface between the inner wall of the housing and the hollow portion decreases the light extraction efficiency. Therefore, when a member such as a translucent resin is filled in the hollow portion, reflection at the interface is suppressed, but the weight increases by the amount of the member such as the translucent resin, and thus the same problem as described above occurs.
On the other hand, the lamp has a sufficiently low power consumption and a long life compared with a conventional fluorescent tube, so that it is desirable to be used not only in developed countries but also in all developing countries. Therefore, it is desired to develop an LED lamp that is as simple and inexpensive as possible. However, since it must be avoided that the luminous efficiency is lowered and the life of the lamp is shortened, it is required not only that the structure is simple and inexpensive, but also that the heat dissipation is further improved.

  Therefore, an object of the present invention is to provide a lamp that uses a solid light-emitting element as a light source, has a simple structure and is inexpensive, and has improved heat dissipation. Specifically, in a lamp using a solid light emitting element as a light source, a preferential countermeasure is taken against a temperature increase related to the wavelength conversion member, a heat radiating member is added, and a member such as a translucent resin is filled in the hollow portion. It aims at suppressing the increase in the weight by this.

  The present invention is directed to a lamp using a solid light emitting element as a light source. And in order to solve the said subject, the lamp | ramp which uses the solid light emitting element of this invention as a light source is provided with a nozzle | cap | die, a housing | casing, and a light emitting module. The base is attached to an external device when used. The casing is made of a translucent material and is connected to the base 110. The light emitting module includes one or a plurality of solid light emitting elements, and is installed so that the main light emitting side is in close contact with the inner wall of the casing.

Further, in a lamp using a solid light emitting element as a light source, a gap between the housing and the light emitting module may be filled with a heat conductive material having both translucency and heat conductivity.
Further, in a lamp using a solid light emitting element as a light source, a shape of a portion of the surface of the housing where the light emitting module is installed is a curved surface, a shape on a main light emitting side of the light emitting module is a plane, and the heat The conductive material may serve as a lens by filling a gap between the housing and the light emitting module.

In the lamp using a solid light emitting element as a light source, a film of a wavelength conversion member may be formed on at least a portion of the housing where the light emitting module is installed.
The lamp using a solid light emitting element as a light source may further include a reflector in a space inside the housing on the back side of the main light emitting side of the light emitting module.

Further, the lamp using the solid light emitting element as the light source further has the back side of the main light emitting side of the light emitting module in the direction of the main light emitting side so that the main light emitting side of the light emitting module is pressed against the inner wall of the housing. It is preferable that an elastic body to be pressed is provided in the housing.
In addition, a lamp using a solid light emitting element as a light source may include a plurality of the light emitting modules, and the elastic body may press the plurality of light emitting modules simultaneously toward each main light emitting side.

In the lamp using a solid light emitting element as a light source, the elastic body may be installed in close contact with the back side of each of the plurality of light emitting modules, and the plurality of light emitting modules may be thermally coupled. .
Further, in a lamp using a solid light emitting element as a light source, the casing is sealed, and the light emitting module is preferably installed in the sealed interior and filled with an inert gas.
The lamp using a solid light emitting element as a light source further includes a drive circuit that is installed so as to be in close contact with the inner wall of the casing and drives the solid light emitting element to emit light, and the casing is substantially cylindrical. Preferably, the light emitting module and the drive circuit are installed at positions facing each other on the inner circumference of the substantially cylindrical portion.

  Here, the lamp module using the solid state light emitting device of the present invention as a light source includes a flat plate and a light emitting module. The flat plate is made of a flat plate-shaped light-transmitting material that is directly attached to the lighting fixture as a front panel of the lighting fixture when used. The light emitting module is composed of one or a plurality of solid state light emitting elements, and the main light emitting side is installed so as to be in close contact with the back surface of the surface to be the light emitting surface of the flat plate.

In the lamp module using a solid light emitting element as a light source, the gap between the flat plate and the light emitting module may be filled with a heat conductive material having both translucency and heat conductivity.
In the lamp module using a solid light emitting element as a light source, a film of a wavelength conversion member may be formed on a portion of the flat plate where the light emitting module is installed.

  Here, the lamp module using the solid light emitting device of the present invention as a light source includes a heat sink and a light emitting module. The heat radiating plate has thermal conductivity that is attached to the back surface of the surface to be the light emitting surface of the panel made of a translucent material included in the external device. The light emitting module is composed of one or a plurality of solid light emitting elements, and is fixed to the heat radiating plate so that when the heat radiating plate is attached to the panel, the main light emitting side of the solid light emitting element is in close contact with the panel. Yes.

Further, in the lamp module using a solid light emitting element as a light source, it is preferable that a heat conductive material having both translucency and thermal conductivity is disposed on the surface of the light emitting module on the main light emitting side.
Moreover, the lamp module which uses a solid light emitting element as a light source may further include an adhesive or a pressure-sensitive adhesive having thermal conductivity in a portion of the heat radiating plate attached to the panel.
The lamp module using a solid light emitting element as a light source is further disposed when the heat radiating plate is attached to the panel so as not to be seen through the panel, and drives the solid light emitting element to emit light. A drive circuit may be provided.
Translucent materials can be made of translucent hard and brittle materials such as glass, so that the thermal conductivity and heat radiation can be increased, and by using materials such as resins, they can be easily damaged. Is also possible.

As described above, in the lamp using the solid state light emitting device of the present invention as the light source, the light emitting module is installed on the inner wall of the casing so that the main light emitting side is in close contact with each other. Without the special configuration, heat generated due to the light emitting module can be released to the housing and radiated from the surface of the housing to the outside.
Therefore, according to the above configuration, since the heat dissipation can be improved while the structure is simple and inexpensive, it is necessary to ensure the luminous efficiency and life characteristics without using a metal heat dissipation member. Heat dissipation characteristics can be obtained.

In addition, by filling the gap between the housing and the light emitting module with a heat conductive material, the heat generated by the light emitting module can be efficiently transferred to the housing, ensuring heat dissipation as well as light extraction efficiency. Can also be secured.
Furthermore, the heat conductive material fills the space between the curved surface and the plane, and at the same time plays a role as a lens, so that the light distribution characteristic can be arbitrarily set without providing a separate lens.

Furthermore, by forming the phosphor film on at least a portion of the casing where the light emitting module is installed, heat generated by wavelength conversion of the phosphor film can be directly transmitted to the casing, and heat dissipation efficiency can be improved.
Furthermore, by providing a reflecting plate, it is possible to improve the luminance by reflecting light traveling toward the back side of the main light emitting side of the light emitting module.

Furthermore, since the elastic body presses the light emitting module against the inner wall of the housing, the degree of adhesion between the light emitting module and the housing can be maintained.
In addition, the elastic body simultaneously presses the plurality of light emitting modules against the inner wall of the housing, thereby maintaining the degree of adhesion between the plurality of light emitting modules and the housing with a simple structure and an inexpensive configuration. Can do.

Furthermore, since the elastic body thermally couples the plurality of light emitting modules, the temperature variation among the light emitting modules is reduced, and the variation in the emission color can be suppressed.
Furthermore, the durability and reliability of the light emitting module can be greatly improved by sealing the light emitting module inside the housing and filling it with an inert gas.

  Furthermore, by installing the light emitting module and the drive circuit on the inner periphery of the substantially cylindrical part of the housing at positions facing each other, the heat source can be separated and the housing can efficiently dissipate heat to the outside. Can do.

In the lamp module using a solid light emitting element as the light source, the main light emitting side of the light emitting module is placed in close contact with the main surface of the flat plate, and therefore a special structure such as a heat sink or a fan is provided for heat dissipation. In addition, the heat generated due to the light emitting module can be released to the flat plate and radiated from the surface of the flat plate to the outside.
Therefore, according to the said structure, heat dissipation can be improved, being a structure with simple structure and cheap.

Further, by filling the gap between the flat plate and the light emitting module with a heat conductive material, the heat generated by the light emitting module can be efficiently transmitted to the flat plate.
Furthermore, by forming the phosphor film on the flat plate, heat generated by wavelength conversion of the phosphor film can be directly transmitted to the flat plate, and the heat radiation efficiency can be increased.

Further, in a lamp module using a solid light emitting element as a light source, a heat sink is attached to the panel of the external device, and the main light emitting side of the light emitting module is in close contact with the panel of the external device, so that heat generated due to the light emitting module is generated. Can be released to the heat sink and the panel, and can be radiated to the outside from the surface of the heat sink and the panel.
Therefore, according to the said structure, heat dissipation can be improved, being a structure with simple structure and cheap.

  In addition, since a heat conductive material having both translucency and heat conductivity is arranged on the main light emitting side of the light emitting module, the heat of the light emitting module can be transmitted to the panel and radiated from the surface of the panel to the outside. .

  In addition, since the heat sink has a heat conductive adhesive or adhesive on the part of the heat sink that is attached to the panel of the external device, it can be easily attached to the panel of the existing external device. High, can also transfer heat from the heat sink to the panel and dissipate heat from the surface of the panel to the outside.

  Furthermore, by providing a drive circuit, it can be easily attached to an existing external device, and is highly versatile.

FIG. 1 is a diagram illustrating an appearance of a lamp 100 that uses the solid-state light emitting device according to the first embodiment as a light source. FIG. 2 is a view of the lamp 100 of FIG. 1 as viewed from the lateral direction indicated by the arrow A in FIG. FIG. 3 is a view of the cross section of the lamp 100 cut along the one-dot chain line BB ′ in FIG. 2 as viewed from the tip direction of the arrow C in FIG. 4A is a diagram showing a cross section of a form in which individual LED elements are sealed with a wavelength conversion member, and FIG. 4B is a diagram showing a cross section of a form in which a plurality of LED elements are collectively sealed with a wavelength conversion member. It is. FIG. 5 is a view of the lamp 200 using the solid state light emitting device according to the first modification as a light source, as viewed from the lateral direction. 6 is a view of a cross section of the lamp 200 taken along the alternate long and short dash line DD ′ in FIG. 5 as viewed from the tip direction of the arrow E in FIG. FIG. 7 is a diagram of a lamp 300 that uses a solid-state light emitting device as a light source according to a second modification as viewed from the side. FIG. 8 is a view of the cross section of the lamp 300 taken along the alternate long and short dash line FF ′ in FIG. 7 as viewed from the tip direction of the arrow G in FIG. FIG. 9 is a diagram of a lamp 400 that uses a solid state light emitting device according to a third modification as a light source, as viewed from the lateral direction. FIG. 10 is a view of a cross section of the lamp 400 taken along the alternate long and short dash line HH ′ in FIG. 9 as viewed from the front end direction of the arrow I in FIG. FIG. 11 is a diagram of a lamp 500 that uses a solid-state light emitting device according to a fourth modification as a light source, as viewed from the side. FIG. 12 is a view of the cross section of the lamp 500 cut along the alternate long and short dash line JJ ′ in FIG. 11 as viewed from the tip direction of the arrow K in FIG. FIG. 13 is a diagram of a lamp 600 that uses a solid-state light emitting device according to a fifth modification as a light source, as viewed from the side. FIG. 14 is a view of a cross section of the lamp 600 taken along the alternate long and short dash line LL ′ in FIG. 13 as viewed from the tip direction of the arrow M in FIG. FIG. 15 is a diagram of a lamp 700 that uses a solid-state light emitting device as a light source according to a sixth modification as viewed from the side. FIG. 16 is a view of a cross section of the lamp 700 cut along the one-dot chain line NN ′ in FIG. 15 as viewed from the tip direction of the arrow O in FIG. FIG. 17 is a view of a lamp 800 that uses a solid-state light emitting device as a light source according to a seventh modification as seen from the side. FIG. 18 is a view of the cross section of the lamp 800 cut along the alternate long and short dash line PP ′ in FIG. 17 as viewed from the tip end direction of the arrow Q in FIG. FIG. 19 shows a lamp 801 in which the elastic bodies 850a and 850b are replaced with other elastic bodies, and shows a cross section similar to FIG. FIG. 20 is an example in which the elastic bodies 850a and 850b are replaced with an elastic body having good thermal conductivity, and is a view showing a cross section similar to FIG. FIG. 21 is a diagram of a lamp 900 that uses a solid-state light emitting device according to a ninth modification as a light source, as viewed from the side. FIG. 22 is a view of the lamp 1000 using the solid-state light emitting device according to the second embodiment as a light source, as viewed from the light emitting surface direction. FIG. 23 is a view of a cross section of the lamp 1000 taken along the alternate long and short dash line RR ′ in FIG. 22, as viewed from the direction lateral to the arrow S in FIG. 21. FIG. 24 is a view showing a cross section similar to FIG. 23, as seen from the right lateral direction, of the lamp 1100 of the tenth modification. FIG. 25 is a diagram illustrating a state in which a film of a wavelength conversion member is formed on the inner wall of the casing around the position where the light emitting module is installed, based on the lamp 100 of the first embodiment. FIG. 26 is a diagram illustrating a state in which the film of the wavelength conversion member is formed on the flat plate around the position where the light emitting module is installed, based on the lamp 1000 of the second embodiment.

[First Embodiment]
<Overview>
In the first embodiment, in a lamp having a simple basic structure, which includes a base, a casing, and a light emitting module, and which uses a solid light emitting element as a light source, the light emitting surface side of the light emitting module is closely attached to the inner surface of the casing. is there.
With such a configuration, heat dissipation can be improved with a simple structure and without adding an expensive configuration for heat dissipation, so that it is possible to suppress a decrease in luminous efficiency and a reduction in lamp life, An inexpensive lamp with low power consumption and long life can be provided.
Furthermore, the heat dissipation is improved by filling the gap between the housing and the light emitting module with a heat conductive material.

<Configuration>
FIG. 1 is a diagram illustrating an appearance of a lamp 100 that uses the solid-state light emitting device according to the first embodiment as a light source. FIG. 2 is a view of the lamp 100 of FIG. 1 as viewed from the lateral direction indicated by the arrow A in FIG. FIG. 3 is a view of the cross section of the lamp 100 taken along the alternate long and short dash line BB ′ in FIG. 2 as viewed from the direction of the arrow C in FIG.
As illustrated in FIGS. 1 to 3, the lamp 100 according to the first embodiment includes a base 110, a housing 120, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 120 and the light emitting module 130. Filled.

In the present embodiment, the type of lamp does not include a drive circuit in the housing, but the type of lamp may include a drive circuit built in the housing.
The base 110 is a portion that is formed of a structural material such as metal or resin and is attached to an external device when used, and includes electrodes 111 and 112 and lead wires 113 and 114. The portions of the electrodes 111 and 112 are made of a conductive material such as a metal, and the two electrodes must be insulated. The electrodes 111 and 112 are connected to the light emitting module 130 by lead wires 113 and 114, respectively, and are supplied with power.

  The housing 120 is a transparent case formed of a translucent material, and an opening portion is connected to the base 110. As these light-transmitting materials, for example, epoxy resin, glass, silicone resin, polycarbonate resin, acrylic resin, or the like may be employed. In the present embodiment, the casing 120 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and has a dome shape in which the lower bottom in the substantially columnar shape is an opening portion and the upper bottom is slightly expanded outward. The shape of the housing 120 is not limited to the above shape. For example, the body portion has a cross-sectional shape in a direction parallel to the upper base or the lower base, for example, a polygon other than a circle. They may be present, corners may be present, and curves and straight lines may be mixed.

The light emitting module 130 is a module for illumination in which one solid light emitting element such as an LED or an EL, or a plurality of solid light emitting elements are integrated into a unit. In addition, the light emitting module 130 may be a unitized LED or EL that emits a single color such as red, green, and blue, or a combination of these LEDs and ELs of each color as appropriate to produce white or any other arbitrary color. It may emit light. In addition, the light emitting module 130 may be configured to mold a wavelength conversion member around the LED and emit white light or any other color. Here, the wavelength conversion member is a member containing a substance that absorbs light having a relatively short wavelength, such as blue light or ultraviolet light, and emits light having a wavelength longer than the absorbed light. YAG phosphor, silicate Inorganic phosphors such as phosphors and oxynitride phosphors, and ceramic phosphors obtained by sintering these inorganic phosphors are common, and rare earth doped glass phosphors, organic phosphors, and metal complexes There are phosphors and the like. For example, the light emitting module 130 may be a module that emits white light by molding a fluorescent material that converts blue into a complementary color of blue around an LED that emits blue light. Alternatively, the light emitting module 130 may be an LED that emits a single color, and a phosphor film may be formed in the main body of the housing 120 or on the surface of the main body to emit any color. An example in which the phosphor film is formed on the surface of the inner wall of the main body of the housing 120 will be described in detail in the following eleventh modification.
In addition, the light emitting module 130 may have a form in which a wavelength conversion member is mounted on a module substrate on which LED elements are primarily mounted, and a form in which a package made of LED elements and phosphors is secondarily mounted on a module substrate.
It is also possible to appropriately combine white LEDs having different color temperatures. It is also possible to perform toning on the black body locus.
4A, the light emitting module 130 includes a plurality of LED elements 132a to 132c mounted on a module substrate 131, and a wavelength conversion member in which a YAG phosphor or the like is dispersed in a silicone resin or the like. Each of the LED elements 132a to 132c may be sealed by 133a to 133c, or a plurality of LED elements 135a to 135f mounted on the module substrate 134 as shown in the sectional view of FIG. May be collectively sealed by the wavelength conversion member 136. As shown in FIG. 4B, diffused light is emitted when the sheet is collectively sealed in a planar shape.
Here, as the sealing material of the light emitting module 130, in addition to the silicone resin, fluorine resin, sol-gel glass, low melting point glass, and the like are conceivable. In particular, sol-gel glass and low-melting-point glass are excellent in heat resistance and light resistance because they are inorganic materials, and have an advantage in increasing output. Moreover, in order to improve thermal conductivity, thixotropy, and light diffusibility (color mixing of LED light and phosphor light), the sealing material has a light-transmitting metal oxide, nitride, carbide (silicon oxide, oxidation) Fine particles (titanium, zinc oxide, zirconium oxide, aluminum oxide, aluminum nitride, silicon nitride, boron nitride, silicon carbide, etc.) (nanoparticles of several nm to several hundred nm, and microparticles of several μm to several tens of μm) It is preferable to add.

  Here, the light emitting module 130 is installed on the inner wall of the housing 120 so that the main light emitting side (the lower side in FIGS. 1 to 3) is in close contact therewith. In addition, if the shape of the main light emission side of the light emitting module 130 and the shape of the inner wall of the housing 120 are both flat, for example, if the shapes of the contact portions of both are matched, nothing is done. Even if not, both can be brought into close contact with each other. However, in the present embodiment, the main light emission side of the light emitting module 130 is planar, but the inner wall of the housing 120 (inner circumference of the substantially cylindrical portion) is curved, so that the shapes of the contact portions of the two match. Without any change, there will be a gap. Therefore, the gap between them is filled with the heat conductive material 140 to bring them into close contact. Even when the shapes of both contact portions coincide with each other, if the space between them is filled with the heat conductive material 140, they can be brought into close contact with each other.

The heat conductive material 140 is a filler having both translucency and heat conductivity, such as silicon grease, and fills a gap between the housing 120 and the light emitting module 130. The heat conductive material 140 may be a silicon-based resin or a fluorine-based resin, and preferably has adhesiveness, adhesiveness, adhesiveness, and light resistance. Further, the heat conductive material 140 has a light-transmitting metal oxide, nitride, carbide (oxidation) in order to improve heat conductivity, thixotropy, and light diffusibility (color mixing of LED light and phosphor light). Fine particles of silicon, titanium oxide, zinc oxide, zirconium oxide, aluminum oxide, aluminum nitride, silicon nitride, boron nitride, silicon carbide, etc.) (nanoparticles of several nm to several hundred nm, and micrometers of several μm to several tens of μm) It is preferable to add fine particles).
In this embodiment, the gap between the housing 120 and the light emitting module 130 has the same shape as the cylindrical lens, and the heat conducting material 140 is filled in the gap to serve as a cylindrical lens, improving heat dissipation. In addition, the diffusibility can be improved. Note that various lenses having desired characteristics can be relatively easily formed by appropriately changing the shape of the gap or selectively using a material having an appropriate refractive index for the heat conducting material 140.

[First Modification]
<Overview>
In the first modification, the upper base of the substantially cylindrical housing is formed into a substantially flat plate, and the light emitting module is installed so that the main light emitting side is in close contact with the inner wall of the substantially flat upper plate.

<Configuration>
FIG. 5 is a view of the lamp 200 using the solid state light emitting device according to the first modification as a light source, as viewed from the lateral direction. FIG. 6 is a view of the cross section of the lamp 200 cut along the alternate long and short dash line DD ′ in FIG. 5 as viewed from the tip direction of the arrow E in FIG.
As shown in FIGS. 5 and 6, the lamp 200 according to the first modification includes a base 110, a housing 220, and a light emitting module 230.

5 and 6, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment.
The housing 220 is a case made of a light-transmitting material, like the housing 120 of the first embodiment, and the opening portion is connected to the base 110. In the first modification, the housing 220 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and the lower bottom of the substantially columnar shape has an opening portion, and the upper bottom has a substantially circular flat plate shape.
The light emitting module 230 differs from the light emitting module 130 of the first embodiment only in shape.

  Here, the light emitting module 230 is installed so that the main light emitting side (the right side in FIG. 5) is in close contact with the inner wall of the front end portion of the housing 220 (the substantially circular flat plate portion corresponding to the upper base). Here, since the shape of the main light emission side of the light emitting module 230 and the shape of the inner wall of the front end portion of the housing 220 are both planar, the heat conductive material 140 is not filled as in the first embodiment. However, it is possible to make them both in close contact. In addition, if the heat conductive material 140 is filled between both, both can be made to contact | adhere more and it can anticipate thermal conductivity improvement.

[Second Modification]
<Overview>
In the second modification, the inner surface of the upper base of the substantially cylindrical housing is flat, the outer surface is dome-shaped, a lens is formed at the tip, the light emitting module is closely attached to the inner wall of the lens, and the main light emitting side is in close contact It is to be installed.

<Configuration>
FIG. 7 is a diagram of a lamp 300 that uses a solid-state light emitting device as a light source according to a second modification as viewed from the side. FIG. 8 is a view of the cross section of the lamp 300 taken along the alternate long and short dash line FF ′ in FIG. 7 as viewed from the tip direction of the arrow G in FIG.
As shown in FIGS. 7 and 8, the lamp 300 according to the second modification includes a base 110, a housing 320, and a light emitting module 230.

7 and 8, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment and the lamp 200 according to the first modification.
The housing 320 is a transparent case formed of a translucent material, like the housing 120 of the first embodiment, and the opening portion is connected to the base 110. In the second modified example, the housing 320 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, the lower bottom of the substantially columnar shape is an opening portion, the upper bottom is a flat surface on the inner surface, and the outer surface is a dome-shaped lens 321. ing.

  Here, the light emitting module 230 is installed so that the main light emitting side (the right side in FIG. 7) is in close contact with the inner wall of the front end portion of the housing 320 (the lens portion corresponding to the upper base). Here, as in the first modification example, the shape of the main light emission side of the light emitting module 230 and the shape of the inner wall of the front end portion of the housing 320 are both planar, and therefore, as in the first embodiment. Even if it is not filled with the heat conductive material 140, the two can be brought into close contact with each other. In addition, if the heat conductive material 140 is filled between both, both can be made to contact | adhere more and it can anticipate thermal conductivity improvement.

[Third Modification]
<Overview>
In the third modification, a reflector is provided in the space in the housing, and the light toward the back side of the main light emitting side of the light emitting module is reflected to improve the luminance on the main light emitting side.

<Configuration>
FIG. 9 is a diagram of a lamp 400 that uses a solid state light emitting device according to a third modification as a light source, as viewed from the lateral direction. FIG. 10 is a view of the cross section of the lamp 400 cut along the alternate long and short dash line HH ′ in FIG. 9 as viewed from the tip direction of the arrow I in FIG. 9.
As illustrated in FIGS. 9 and 10, the lamp 400 according to the third modification includes a base 110, a housing 120, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 120 and the light emitting module 130. Further, a reflecting plate 450 is provided in a space in the housing 120 on the back side of the main light emitting side (the lower side in FIGS. 9 and 10) of the light emitting module 130.

9 and 10, the same reference numerals are given to components having the same functions as those of the components of the lamp 100 of the first embodiment.
The reflective plate 450 has a high reflectivity such as, for example, a material that has been improved in reflectivity by vapor-depositing aluminum on the surface of the molded resin, stainless steel with a mirror finish, or plated steel. Made of material.
Thus, by providing the reflecting plate 450, the light directed to the back side of the main light emitting side of the light emitting module 130 is reflected, and the luminance on the main light emitting side can be improved.

[Fourth Modification]
<Overview>
The fourth modification is adapted to E-type lamps such as sockets for light bulbs, and since the base is screwed, the light emission direction cannot be fixed, so a mechanism for adjusting the light distribution direction is added. It is a thing.

<Configuration>
FIG. 11 is a diagram of a lamp 500 that uses a solid-state light emitting device according to a fourth modification as a light source, as viewed from the side. FIG. 12 is a view of a cross section of the lamp 500 taken along the alternate long and short dash line JJ ′ in FIG. 11 as viewed from the tip direction of the arrow K in FIG.
As illustrated in FIGS. 11 and 12, the lamp 500 according to the fourth modification includes a base 510, a housing 520, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 520 and the light emitting module 130. In addition, a light distribution adjusting mechanism 550 is provided between the base 510 and the housing 520.

11 and 12, the same reference numerals are given to components having functions similar to those of the components of the lamp 100 of the first embodiment.
The base 510 is formed of a structural material such as metal or resin, and is a part attached to an external device when used. For example, the base 510 is a screw-type base of an E base type, and includes electrodes 511 and 512, a lead wire 513, 514. The portions of the electrodes 511 and 512 are made of a conductive material such as metal, and the two electrodes must be insulated. The electrodes 511 and 512 are connected to the light emitting module 130 by lead wires 513 and 514, respectively, and supplied with power.

  The housing 520 is a transparent case formed of a translucent material, and an opening portion is connected to the base 510. In the present embodiment, the housing 520 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and has a shape in which the lower bottom in the substantially columnar shape is an opening portion and the upper bottom is slightly inflated.

Here, the light emitting module 130 is installed on the inner wall of the housing 520 so that the main light emitting side (the lower side in FIGS. 11 and 12) is in close contact with each other, and details thereof are provided in the lamp 100 of the first embodiment. The relationship between the casing 120 and the light emitting module 130 is the same.
The light distribution adjusting mechanism 550 is configured to arbitrarily adjust the relative rotation angle between the base 510 and the housing 520 by about 360 degrees, and by rotating relatively many times, the lead wire 513, A stopper (not shown) for preventing over-rotation is provided so that 514 is not disconnected.
The lead wires 513 and 514 are each coated so as to withstand twisting due to relative rotation between the base 510 and the housing 520, and the central portion is gathered, and the gathered portion has a coil shape.
In this way, in the case of a screw-type base such as the base 510, the light emitting module 130 does not necessarily face the direction in which it is desired to irradiate when attached to a lighting fixture. An adjustment mechanism 550 is provided to adjust the light distribution direction.

[Fifth Modification]
<Overview>
In the fifth modification, the drive circuit is installed in the housing together with the light emitting module so as to be in close contact with the inner wall of the housing.

<Configuration>
FIG. 13 is a diagram of a lamp 600 that uses a solid-state light emitting device according to a fifth modification as a light source, as viewed from the side. 14 is a view of a cross section of the lamp 600 taken along the alternate long and short dash line LL ′ in FIG. 13 as viewed from the tip direction of the arrow M in FIG.
As illustrated in FIGS. 13 and 14, the lamp 600 according to the fifth modification includes a base 110, a housing 120, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 120 and the light emitting module 130. The housing 120 is further provided with a drive circuit 650.

13 and 14, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment.
The drive circuit 650 is an electronic circuit that outputs power suitable for lighting the light emitting module 130. For example, when a general household power supply (AC100V or AC200V) is input, the drive circuit 650 is a rectifier diode, an inductor, or the like. For example, when a DC power supply (DC6V, 12V, or 24V, etc.) is input, a primary circuit element such as a capacitor or an inductor, and a switching transistor are included. Including.

Here, in the present modification, the light emitting module 130 is installed so that the main light emitting side (the lower side in FIGS. 13 and 14) is in close contact with the inner periphery of the substantially cylindrical body portion of the housing 120. The drive circuit 650 is installed in the farthest place (upper side in FIGS. 13 and 14) in the inner circumference facing the light emitting module 130.
In this manner, by installing the light emitting module 130 and the drive circuit 650 at positions facing each other, the heat source can be separated, and heat can be efficiently radiated to the outside by the housing.

[Sixth Modification]
<Overview>
In the sixth modified example, the casing is sealed, the light emitting module is installed inside the sealed casing, and an inert gas is filled.

<Configuration>
FIG. 15 is a diagram of a lamp 700 that uses a solid-state light emitting device as a light source according to a sixth modification as viewed from the side. FIG. 16 is a view of a cross section of the lamp 700 taken along the alternate long and short dash line NN ′ in FIG. 15 as viewed from the direction of the arrow O in FIG.
As illustrated in FIGS. 15 and 16, the lamp 700 according to the sixth modification includes a base 110, a housing 720, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 720 and the light emitting module 130. In addition, the housing 720 is sealed and filled with an inert gas 721. Here, in FIG. 15, the place filled with the inert gas 721 is shaded for convenience.

15 and 16, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment.
The housing 720 is a transparent case formed of a light-transmitting material, and is sealed with the light emitting module 130 installed therein, and the sealed side is connected to the base 110. Further, the inside and outside of the housing 720 are electrically connected so that the lead wires 113 and 114 can supply power to the internal light emitting module 130, and an inert gas such as nitrogen gas is further provided inside the housing 720. Is filled. In this modification, the housing 720 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and has a lower dome shape in a substantially cylindrical shape as a sealing portion, and has a dome shape in which the upper bottom is slightly inflated.

Here, the light emitting module 130 is installed on the inner wall of the housing 720 so that the main light emitting side (the lower side in FIGS. 15 and 16) is in close contact with the lamp 100 of the first embodiment. The relationship between the casing 120 and the light emitting module 130 in FIG.
As described above, the light emitting module 130 is sealed in the housing 720 and filled with the inert gas 721, whereby the durability and reliability of the light emitting module 130 can be significantly improved.

[Seventh Modification]
<Overview>
In the seventh modification, the light emitting module is pressed against the inner wall of the casing with an elastic body, thereby maintaining the degree of adhesion between the light emitting module and the casing. A plurality of light emitting modules are provided inside the casing. When installing, the elastic body simultaneously presses the plurality of light emitting modules against the inner wall of the casing.

<Configuration>
FIG. 17 is a view of a lamp 800 that uses a solid-state light emitting device as a light source according to a seventh modification as seen from the side. FIG. 18 is a view of the cross section of the lamp 800 cut along the alternate long and short dash line PP ′ in FIG. 17 as viewed from the tip end direction of the arrow Q in FIG.
As illustrated in FIGS. 17 and 18, the lamp 800 according to the seventh modification includes a base 110, a housing 120, and light emitting modules 130 a to d, and heat is provided in the gaps between the housing 120 and the light emitting modules 130 a to 130 d. Conductive materials 140a to 140d are filled, and the housing 120 is further provided with elastic bodies 850a to 850b.
17 and 18, the same reference numerals are given to components having the same functions as those of the components of the lamp 100 of the first embodiment.
The lead wires 113a to 113d and 114a to 114d have the same functions as the lead wires 113 and 114 of the first embodiment, respectively.
Each of the light emitting modules 130a to 130d has a function similar to that of the light emitting module 130 of the first embodiment.

Here, the electrodes 111 and 112 are respectively connected to the light emitting module 130a by lead wires 113a and 114a, are connected to the light emitting module 130b by lead wires 113b and 114b, and are connected to the light emitting module 130c by lead wires 113c and 114c. The light emitting module 130d is connected by lines 113d and 114d.
Each of the heat conductive materials 140a to 140d has a function similar to that of the heat conductive material 140 of the first embodiment.
Here, the light emitting modules 130a to 130d are installed on the inner wall of the housing 120 so that the main light emitting side (the lower side in FIGS. 17 and 18) is in close contact, and details thereof are the same as those in the first embodiment. The relationship between the casing 120 and the light emitting module 130 in the lamp 100 is the same.
Further, the heat conductive material 140a fills the gap between the housing 120 and the light emitting module 130a, the heat conductive material 140b fills the gap between the housing 120 and the light emitting module 130b, and the heat conductive material 140c emits light from the housing 120. The gap between the module 130c is filled, and the gap between the heat conductive material 140d casing 120 and the light emitting module 130d is filled.

The elastic bodies 850a and 850b are ring-shaped springs or rubbers having elastic force, and the main light emission of the light emitting modules 130a to 130d is so pressed that the main light emission side of the light emitting modules 130a to 130d is in pressure contact with the inner wall of the housing 120. Press the back side of the side toward the main light emission side.
In this modified example, the elastic bodies 850a to 850b simultaneously press four light emitting modules toward the main light emitting side, but the modified example can be applied to any number of light emitting modules. For example, when there is one light emitting module, one light emitting module is pressed toward the main light emitting side.

FIG. 19 shows a lamp 801 in which the elastic bodies 850a and 850b are replaced with other elastic bodies, and shows a cross section similar to FIG.
As shown in FIG. 19, the lamp 801 includes an elastic body 851 instead of the elastic bodies 850 a and 850 b of the lamp 800.
The elastic body 851 is a mounting bracket for a light emitting module made of a metal or resin in which a spring having elastic force intersects the cross, and the back side of the main light emitting side of each of the light emitting modules 130a to 130d is subjected to main light emission. Press toward the side.

  In this manner, the light emitting modules 130a to 130d and the housing are formed by pressing the light emitting modules 130a to 130d against the inner wall of the housing 120 by the elastic bodies 850a to 850b and the elastic body 851. The degree of adhesion with 120 can be maintained.

[Eighth Modification]
<Overview>
In the eighth modification, the elastic bodies 850a and 850b of the seventh modification are replaced with elastic bodies having good thermal conductivity, and the light emitting module is thermally coupled.

<Configuration>
FIG. 20 is an example in which the elastic bodies 850a and 850b are replaced with an elastic body having good thermal conductivity, and is a view showing a cross section according to FIG.
As illustrated in FIG. 20, a lamp 802 according to the eighth modification includes an elastic body 852 instead of the elastic bodies 850 a and 850 b of the lamp 800.
In FIG. 20, the same reference numerals are given to components having the same functions as those of the lamp 100 of the first embodiment and the lamp 800 of the seventh modified example.

The elastic body 852 is a ring-shaped spring, rubber, or the like having an elastic force, and its thermal conductivity is enhanced by using a large amount of metal such as aluminum or increasing the volume.
In this modification, the elastic body 852 simultaneously presses four light emitting modules toward the main light emitting side and thermally couples the four light emitting modules, but the number of light emitting modules is two or more. If so, this modification can be applied.
As described above, the elastic body 852 thermally couples the plurality of light emitting modules 130a to 130d, so that variation in temperature between the light emitting modules can be reduced and variation in emission color can be suppressed.

[Ninth Modification]
<Overview>
The ninth modified example shows an application example to a straight pipe and a double cap type.
<Configuration>
FIG. 21 is a diagram of a lamp 900 that uses a solid-state light emitting device according to a ninth modification as a light source, as viewed from the side.
As shown in FIG. 21, the lamp 900 according to the ninth modification includes bases 110a to 110b, a casing 320, and n light emitting modules 931, 932,. .., 93n are filled with n thermal conductive materials 941, 942,..., 94n, respectively, in the gaps between the light emitting modules 931, 932,. Here, n is an integer of 2 or more.

  The bases 110a to 110b are parts formed of a structural material such as metal or resin, and are attached to an external device when used. The bases 110a to 110b include electrodes 111a to b and 112a to b and lead wires 113e to f and 114e to f. . The portions of the electrodes 111a-b and 112a-b are made of a conductive material such as metal, and the two electrodes must be insulated. The electrodes 111a and 112a are connected to the light emitting module 931 through lead wires 113e and 114e, respectively, and the electrodes 111b and 112b are connected to the light emitting module 93n through lead wires 113f and 114f, respectively, and supplied with power. Adjacent light emitting modules are connected by connecting lead wires.

The housing 920 is a transparent case formed of a translucent material, like the housing 120 of the first embodiment, and two opening portions are connected to the caps 110a and 110b, respectively. In the ninth modified example, the housing 920 has a substantially cylindrical shape with a body portion being a substantially cylindrical shape, and the upper bottom and the lower bottom in the substantially columnar shape are respectively open portions.
Here, the light emitting modules 931, 932,..., 93n are installed on the inner wall of the housing 920 so that the main light emitting side (the lower side in FIG. 21) is in close contact with each other. This is the same as the relationship between the housing 120 and the light emitting module 130 in the lamp 100 of the embodiment.

<Summary>
As described above, in each of the lamps using the solid light emitting element as the light source in the first embodiment and the first to ninth modifications, the light emitting module is installed on the inner wall of the housing with the main light emitting side in close contact. As a result, heat generated due to the light emitting module can be released to the housing and radiated from the surface of the housing to the outside without providing a special structure such as a heat sink or a fan for heat dissipation. .
Therefore, according to the above configuration, since the heat dissipation can be improved while the structure is simple and inexpensive, it is necessary to ensure the luminous efficiency and life characteristics without using a metal heat dissipation member. Heat dissipation characteristics can be obtained.

[Second Embodiment]
<Overview>
In the second embodiment, a light emitting module is installed on a main surface of a flat plate made of a light-transmitting material so that the main light emitting side is in close contact, and heat generated due to the light emitting module is released to the flat plate, and the surface of the flat plate is exposed to the outside. To dissipate heat.

<Configuration>
FIG. 22 is a view of the lamp 1000 using the solid-state light emitting device according to the second embodiment as a light source, as viewed from the light emitting surface direction. FIG. 23 is a view of the cross section of the lamp 1000 taken along the alternate long and short dash line RR ′ in FIG. 22 as seen from the direction lateral to the arrow S in FIG.
As shown in FIGS. 22 and 23, the lamp 1000 according to the second embodiment includes a flat plate 1010, a light emitting module 1020, a drive circuit 1030, and a heat sink 1040.

In the present embodiment, the type of lamp is provided with a drive circuit, but a type of lamp without a drive circuit may be used.
The flat plate 1010 is a flat plate-shaped light-transmitting plate formed of a light-transmitting material, and is directly attached to the lighting fixture as a front panel of the lighting fixture when the lamp 1000 is used.

  The light emitting module 1020 is composed of one or a plurality of solid state light emitting elements, and the main light emitting side (the upper side in FIG. 23) is the back surface (the lower surface in FIG. 23) of the surface to be the light emitting surface of the flat plate 1010. It is installed in close contact. The light emitting module 1020 has the same function as the light emitting module 130 of the first embodiment, and only the shape is different. In the present embodiment, the light emitting module 1020 has a plate shape with a square light emitting surface.

Similar to the drive circuit 650 described in the fifth modification, the drive circuit 1030 is an electronic circuit that outputs electric power suitable for lighting the light emitting module 1020 to drive the solid light emitting element to emit light, and the lead wire 1031. 1032 and installed at a position that does not overlap with the flat plate 1010 when viewed from the light emitting surface direction.
The heat radiating plate 1040 fixes the flat plate 1010 and the light emitting module 1020 with a thermally conductive adhesive or adhesive, and simultaneously absorbs heat generated by the light emitting module 1020 and dissipates it into the atmosphere. .

Here, the light emitting module 1020 is installed so that the main light emitting side (the lower side in FIG. 23) is in close contact with the center of the back surface of the flat plate 1010. Here, since the shape of the main light emission side of the light emitting module 1020 and the shape of the back surface of the flat plate 1010 are both planar, both of them can be filled without the thermal conductive material 140 as in the first embodiment. Can be almost adhered. If a filler having both translucency and thermal conductivity such as the thermal conductive material 140 is filled between the two, the two can be brought into close contact with each other, and improvement in thermal conductivity can be expected.
Note that it is not always necessary to use the drive circuit 1030 and the heat sink 1040 in the lamp 1000, and the object of the present application can be achieved even when these configurations are not provided.

[Tenth Modification]
<Overview> The tenth modification is a configuration in which the flat plate 1010 is removed from the lamp 1000 of the second embodiment, and is used by being attached to a panel made of a light-transmitting material included in any appropriate external device. belongs to.

<Configuration>
FIG. 24 is a view showing a cross section similar to FIG. 23, as seen from the right lateral direction, of the lamp 1100 of the tenth modification.
As shown in FIG. 24, a lamp 1100 according to the tenth modification includes a light emitting module 1120, a drive circuit 1130, and a heat sink 1140.
In FIG. 24, the same reference numerals are given to components having the same functions as those of the components of the lamp 1000 of the second embodiment.

  The light emitting module 1120 includes one or a plurality of solid state light emitting elements, and the main light emitting side (the upper side in FIG. 24) is in close contact with the panel when the heat sink 1140 is attached to the panel of an arbitrary external device. In this way, it is fixed to the heat sink 1140. Further, when a heat conductive material 1121 having both translucency and heat conductivity is applied to the main light emitting side of the light emitting module 1120 and attached to a panel of an arbitrary external device, the panel and the light emitting module 1120 The gap is filled with the heat conductive material 1121.

  Similar to the drive circuit 650 described in the fifth modification, the drive circuit 1130 is an electronic circuit that outputs power suitable for lighting the light emitting module 1120 to drive the solid light emitting element to emit light, and the lead wire 1131. 1132, when the heat radiating plate 1140 is attached to a panel of an external device having a general size, the heat radiating plate 1140 is arranged at a position that is so far away that it cannot be seen through the panel.

The heat radiating plate 1140 fixes the light emitting module 1120 with a thermally conductive adhesive or adhesive material, and simultaneously absorbs heat generated by the light emitting module 1120 and dissipates it into the atmosphere. Moreover, in this embodiment, since the adhesive or adhesive 1141 which has heat conductivity is made to adhere to the part attached to the panel of an external device of the heat sink 1140, both can be made to contact | adhere more and heat. An improvement in conductivity can be expected.
Note that it is not always necessary to use the driver circuit 1130 in the lamp 1100, and the object of the present application can be achieved even when these configurations are not provided.

<Summary>
As described above, the lamps of the second embodiment and the tenth modification, each having a solid light emitting element as a light source, are installed with a light emitting module on a flat plate, with the main light emitting side in close contact with each other. The heat generated due to the light emitting module can be released to the flat plate and radiated from the surface of the flat plate to the outside.
Therefore, according to the said structure, heat dissipation can be improved, being a structure with simple structure and cheap.

[Eleventh Modification]
<Overview>
In the eleventh modification, the light emitting module is installed on the inner surface of the casing of the translucent material and the main surface of the flat plate with the main light emitting side in close contact, and the wavelength conversion member is installed at the position where the light emitting module is installed. A film is formed, and heat generated from the phosphor film is directly transmitted to the casing and the flat plate.

<Configuration>
FIG. 25 is a diagram illustrating a state in which a film of a wavelength conversion member is formed on the inner wall of the casing around the position where the light emitting module is installed, based on the lamp 100 of the first embodiment. FIG. 25 corresponds to an enlarged view of the vicinity of the position where the light emitting module is installed in FIG. 3 of the first embodiment. Here, the difference between FIG. 25 and FIG. 3 is only that the film 122 of the wavelength conversion member is formed at the position where the light emitting module is installed in the housing main body 121.

FIG. 26 is a diagram illustrating a state in which the film of the wavelength conversion member is formed on the flat plate around the position where the light emitting module is installed, based on the lamp 1000 of the second embodiment.
FIG. 26 corresponds to an enlarged view of the vicinity of the position where the light emitting module is installed in FIG. 23 of the second embodiment. Here, the difference between FIG. 26 and FIG. 23 is only that the wavelength conversion member film 1012 is formed at the position where the light emitting module is installed in the flat plate body 1011.
In this way, by integrating the film of the wavelength conversion member into the housing and the flat plate, the amount of heat from the film of the wavelength conversion member that generally generates a large amount of heat can be efficiently radiated from the housing and the flat plate to the outside. Heat dissipation efficiency can be increased.
Translucent materials can be made of translucent hard and brittle materials such as glass, so that the thermal conductivity and heat radiation can be increased, and by using materials such as resins, they can be easily damaged. Is also possible.
<Examination of effect>
Here, the grounds for ensuring heat dissipation by the casing formed of the translucent material are shown below.
For example, the thermal conductivity of glass, which is one of translucent materials, is two to three orders of magnitude lower than that of metal, but is about one order of magnitude higher than that of resin.
The main materials have thermal conductivity of aluminum 240, copper 400, iron 80, glass 1, acrylic resin 0.2, polycarbonate resin 0.2, epoxy resin 0.2, polystyrene resin 0.1 (the unit is [ W / m · K]).
In the case of the present application, since the casing occupies most of the outer shape of the lamp, a large envelope volume can be secured, and if the casing is made of glass, the emissivity is close to 1, and thus high heat dissipation characteristics can be secured.
The thermal emissivity (ratio of black body radiation to 1) of the main substances is glass 0.9, aluminum (non-oxidized surface) 0.2, aluminum (oxidized surface) 0.4 (all units are anonymous [- ]).
Further, for example, the thermal conductivity of ceramics, which is one of translucent materials, is comparable to an order of magnitude lower than that of metal (aluminum nitride ceramic 150, alumina 20 (unit is [W / m · K] )) And the thermal emissivity is close to blackbody radiation (ceramics 0.9 (unit: anonymous [-])).
Therefore, in the case of the present application, if the housing is ceramic, the emissivity is higher than that of glass, so that higher heat dissipation characteristics can be ensured.

  The lamp of the present invention allows heat generated due to the light emitting module to escape to the housing and dissipates heat from the surface of the housing to the outside. Therefore, the lamp can be applied to all lighting devices such as general household lighting and outdoor lights. In particular, the lamp of the present invention is highly reliable because it can improve heat dissipation while avoiding a reduction in luminous efficiency or shortening the life of the lamp while having a simple structure and an inexpensive configuration. Its industrial use value is extremely high.

100 Lamp 110 Base 111, 112, 111a-b, 112a-b Electrode 113, 114, 113a-f, 114a-f Lead wire 120 Housing 121 Housing body 122 Membrane 130, 130a-d Light emitting module 140, 140a-d Thermal conductive material 200 Lamp 220 Case 230 Light emitting module 300 Lamp 320 Case 321 Lens 400 Lamp 450 Reflector 500 Lamp 510 Base 511, 512 Electrode 513, 514 Lead wire 520 Case 550 Light distribution adjusting mechanism 600 Lamp 650 Drive circuit 700 Lamp 720 Housing 721 Inert gas 800, 801, 802 Lamp 850a-b, 851, 852 Elastic body 900 Lamp 920 Housing 931, 932,..., 93n Light emitting module 941, 942,. n thermally conductive material 1000 lamp 1010 flat 1011 flat body 1012 film 1020 emitting module 1030 driving circuit 1040 radiating plate 1100 lamp 1120 emitting module 1121 thermal material 1130 driving circuit 1131 and 1132 lead 1140 radiating plate 1141 adhesive, or pressure-sensitive adhesive

  The present invention relates to a lamp using a solid light emitting element such as an LED or an EL as a light source, and more specifically to a technique for further improving heat dissipation.

In recent years, with the improvement of semiconductor technology, there is an increasing demand for lamps that use solid-state light-emitting elements as light sources.
Since the lamp has a low power consumption and a long life, it greatly contributes to the promotion of energy saving and is expected to spread explosively in the future.

A conventional LED lamp is disclosed in Patent Document 1.
According to the LED lamp of Patent Document 1, by providing the heat dissipation member including a plurality of plate portions arranged in parallel to each other and connected to each other, “the unit of the heat dissipation member by the plurality of plate portions” is provided. Since the surface area per weight is large, the heat dissipation member has a relatively large contact area with the outside air even if it is relatively lightweight. Can be realized. "

JP 2009-277483 A

Solid light-emitting elements such as LEDs and EL tend to have lower luminous efficiency as the temperature rises, and improving heat dissipation is a problem.
The main cause of the temperature rise of the solid state light emitting device is the first cause that the electric power not changed to light in the solid state light emitting device is changed to heat, and the light absorbed by the wavelength conversion member such as the phosphor is converted. It can be considered as a second cause that the light that has not been turned into heat. According to the actual measurement by the inventors, the temperature on the light extraction side, which is largely influenced by heat generation mainly due to the second cause, is higher than that on the opposite side of the light extraction side, which is mainly affected by heat generation due to the first cause. Was found to be expensive.
As a countermeasure against the first cause, there is an example in which a heat dissipating member is disposed on the opposite side of the light extraction side as in Patent Document 1 to actively dissipate heat. Priority is given to heat dissipation related to the cause. However, there is no example of preferentially taking measures against the second cause.
In order to improve heat dissipation, a metallic heat dissipation member (corresponding to the heat dissipation member 20 of Patent Document 1) is generally disposed on the side opposite to the light extraction side. However, the use of a heat dissipation member increases the weight of the lamp by that amount, which limits the mounting of the lamp on the fixture due to the increase in weight, increases the work load during installation and replacement, and increases the cost of transportation. There is a problem that there are many inconvenient points such as.
Further, in the case where the space between the light emitting module and the inner wall of the housing is hollow, reflection at the interface between the light extraction surface and the hollow portion and at the interface between the inner wall of the housing and the hollow portion decreases the light extraction efficiency. Therefore, when a member such as a translucent resin is filled in the hollow portion, reflection at the interface is suppressed, but the weight increases by the amount of the member such as the translucent resin, and thus the same problem as described above occurs.
On the other hand, the lamp has a sufficiently low power consumption and a long life compared with a conventional fluorescent tube, so that it is desirable to be used not only in developed countries but also in all developing countries. Therefore, it is desired to develop an LED lamp that is as simple and inexpensive as possible. However, since it must be avoided that the luminous efficiency is lowered and the life of the lamp is shortened, it is required not only that the structure is simple and inexpensive, but also that the heat dissipation is further improved.

  Therefore, an object of the present invention is to provide a lamp that uses a solid light-emitting element as a light source, has a simple structure and is inexpensive, and has improved heat dissipation. Specifically, in a lamp using a solid light emitting element as a light source, a preferential countermeasure is taken against a temperature increase related to the wavelength conversion member, a heat radiating member is added, and a member such as a translucent resin is filled in the hollow portion. It aims at suppressing the increase in the weight by this.

  The present invention is directed to a lamp using a solid light emitting element as a light source. And in order to solve the said subject, the lamp | ramp which uses the solid light emitting element of this invention as a light source is provided with a nozzle | cap | die, a housing | casing, and a light emitting module. The base is attached to an external device when used. The casing is made of a translucent material and is connected to the base 110. The light emitting module includes one or a plurality of solid light emitting elements, and is installed so that the main light emitting side is in close contact with the inner wall of the casing.

Further, in a lamp using a solid light emitting element as a light source, a gap between the housing and the light emitting module may be filled with a heat conductive material having both translucency and heat conductivity.
Further, in a lamp using a solid light emitting element as a light source, a shape of a portion of the surface of the housing where the light emitting module is installed is a curved surface, a shape on a main light emitting side of the light emitting module is a plane, and the heat The conductive material may serve as a lens by filling a gap between the housing and the light emitting module.

In the lamp using a solid light emitting element as a light source, a film of a wavelength conversion member may be formed on at least a portion of the housing where the light emitting module is installed.
The lamp using a solid light emitting element as a light source may further include a reflector in a space inside the housing on the back side of the main light emitting side of the light emitting module.

Further, the lamp using the solid light emitting element as the light source further has the back side of the main light emitting side of the light emitting module in the direction of the main light emitting side so that the main light emitting side of the light emitting module is pressed against the inner wall of the housing. It is preferable that an elastic body to be pressed is provided in the housing.
In addition, a lamp using a solid light emitting element as a light source may include a plurality of the light emitting modules, and the elastic body may press the plurality of light emitting modules simultaneously toward each main light emitting side.

In the lamp using a solid light emitting element as a light source, the elastic body may be installed in close contact with the back side of each of the plurality of light emitting modules, and the plurality of light emitting modules may be thermally coupled. .
Further, in a lamp using a solid light emitting element as a light source, the casing is sealed, and the light emitting module is preferably installed in the sealed interior and filled with an inert gas.
The lamp using a solid light emitting element as a light source further includes a drive circuit that is installed so as to be in close contact with the inner wall of the casing and drives the solid light emitting element to emit light, and the casing is substantially cylindrical. Preferably, the light emitting module and the drive circuit are installed at positions facing each other on the inner circumference of the substantially cylindrical portion.

  Here, the lamp module using the solid state light emitting device of the present invention as a light source includes a flat plate and a light emitting module. The flat plate is made of a flat plate-shaped light-transmitting material that is directly attached to the lighting fixture as a front panel of the lighting fixture when used. The light emitting module is composed of one or a plurality of solid state light emitting elements, and the main light emitting side is installed so as to be in close contact with the back surface of the surface to be the light emitting surface of the flat plate.

In the lamp module using a solid light emitting element as a light source, the gap between the flat plate and the light emitting module may be filled with a heat conductive material having both translucency and heat conductivity.
In the lamp module using a solid light emitting element as a light source, a film of a wavelength conversion member may be formed on a portion of the flat plate where the light emitting module is installed.

  Here, the lamp module using the solid light emitting device of the present invention as a light source includes a heat sink and a light emitting module. The heat radiating plate has thermal conductivity that is attached to the back surface of the surface to be the light emitting surface of the panel made of a translucent material included in the external device. The light emitting module is composed of one or a plurality of solid light emitting elements, and is fixed to the heat radiating plate so that when the heat radiating plate is attached to the panel, the main light emitting side of the solid light emitting element is in close contact with the panel. Yes.

Further, in the lamp module using a solid light emitting element as a light source, it is preferable that a heat conductive material having both translucency and thermal conductivity is disposed on the surface of the light emitting module on the main light emitting side.
Moreover, the lamp module which uses a solid light emitting element as a light source may further include an adhesive or a pressure-sensitive adhesive having thermal conductivity in a portion of the heat radiating plate attached to the panel.
The lamp module using a solid light emitting element as a light source is further disposed when the heat radiating plate is attached to the panel so as not to be seen through the panel, and drives the solid light emitting element to emit light. A drive circuit may be provided.
Translucent materials can be made of translucent hard and brittle materials such as glass, so that the thermal conductivity and heat radiation can be increased, and by using materials such as resins, they can be easily damaged. Is also possible.

As described above, in the lamp using the solid state light emitting device of the present invention as the light source, the light emitting module is installed on the inner wall of the casing so that the main light emitting side is in close contact with each other. Without the special configuration, heat generated due to the light emitting module can be released to the housing and radiated from the surface of the housing to the outside.
Therefore, according to the above configuration, since the heat dissipation can be improved while the structure is simple and inexpensive, it is necessary to ensure the luminous efficiency and life characteristics without using a metal heat dissipation member. Heat dissipation characteristics can be obtained.

In addition, by filling the gap between the housing and the light emitting module with a heat conductive material, the heat generated by the light emitting module can be efficiently transferred to the housing, ensuring heat dissipation as well as light extraction efficiency. Can also be secured.
Furthermore, the heat conductive material fills the space between the curved surface and the plane, and at the same time plays a role as a lens, so that the light distribution characteristic can be arbitrarily set without providing a separate lens.

Furthermore, by forming the phosphor film on at least a portion of the casing where the light emitting module is installed, heat generated by wavelength conversion of the phosphor film can be directly transmitted to the casing, and heat dissipation efficiency can be improved.
Furthermore, by providing a reflecting plate, it is possible to improve the luminance by reflecting light traveling toward the back side of the main light emitting side of the light emitting module.

Furthermore, since the elastic body presses the light emitting module against the inner wall of the housing, the degree of adhesion between the light emitting module and the housing can be maintained.
In addition, the elastic body simultaneously presses the plurality of light emitting modules against the inner wall of the housing, thereby maintaining the degree of adhesion between the plurality of light emitting modules and the housing with a simple structure and an inexpensive configuration. Can do.

Furthermore, since the elastic body thermally couples the plurality of light emitting modules, the temperature variation among the light emitting modules is reduced, and the variation in the emission color can be suppressed.
Furthermore, the durability and reliability of the light emitting module can be greatly improved by sealing the light emitting module inside the housing and filling it with an inert gas.

  Furthermore, by installing the light emitting module and the drive circuit on the inner periphery of the substantially cylindrical part of the housing at positions facing each other, the heat source can be separated and the housing can efficiently dissipate heat to the outside. Can do.

In the lamp module using a solid light emitting element as the light source, the main light emitting side of the light emitting module is placed in close contact with the main surface of the flat plate, and therefore a special structure such as a heat sink or a fan is provided for heat dissipation. In addition, the heat generated due to the light emitting module can be released to the flat plate and radiated from the surface of the flat plate to the outside.
Therefore, according to the said structure, heat dissipation can be improved, being a structure with simple structure and cheap.

Further, by filling the gap between the flat plate and the light emitting module with a heat conductive material, the heat generated by the light emitting module can be efficiently transmitted to the flat plate.
Furthermore, by forming the phosphor film on the flat plate, heat generated by wavelength conversion of the phosphor film can be directly transmitted to the flat plate, and the heat radiation efficiency can be increased.

Further, in a lamp module using a solid light emitting element as a light source, a heat sink is attached to the panel of the external device, and the main light emitting side of the light emitting module is in close contact with the panel of the external device, so that heat generated due to the light emitting module is generated. Can be released to the heat sink and the panel, and can be radiated to the outside from the surface of the heat sink and the panel.
Therefore, according to the said structure, heat dissipation can be improved, being a structure with simple structure and cheap.

  In addition, since a heat conductive material having both translucency and heat conductivity is arranged on the main light emitting side of the light emitting module, the heat of the light emitting module can be transmitted to the panel and radiated from the surface of the panel to the outside. .

In addition, since the heat sink has a heat conductive adhesive or adhesive on the part of the heat sink that is attached to the panel of the external device, it can be easily attached to the panel of the existing external device. High, can also transfer heat from the heat sink to the panel and dissipate heat from the surface of the panel to the outside.

  Furthermore, by providing a drive circuit, it can be easily attached to an existing external device, and is highly versatile.

The figure which shows the external appearance of the lamp | ramp 100 which uses the solid light emitting element concerning 1st Embodiment as a light source. The figure which looked at the lamp | ramp 100 of FIG. 1 from the just lateral direction shown by the arrow A in FIG. FIG. 2 is a view of a cross section of the lamp 100 cut along a one-dot chain line BB ′ in FIG. 2 as viewed from the tip direction of an arrow C in FIG. (A) is a figure which shows the cross section of the form which seals each LED element with a wavelength conversion member, (b) is a figure which shows the cross section of the form which seals several LED element with a wavelength conversion member collectively The figure which looked at the lamp 200 which uses the solid light emitting element which concerns on a 1st modification as a light source from the right lateral direction. The figure which looked at the cross section of the lamp | ramp 200 cut | disconnected in the dashed-dotted line DD 'in FIG. 5 from the front-end | tip direction of the arrow E in FIG. The figure which looked at the lamp | ramp 300 which uses the solid light emitting element which concerns on a 2nd modification as a light source from the lateral direction. FIG. 7 is a cross-sectional view of the lamp 300 taken along the alternate long and short dash line FF ′ in FIG. 7 as viewed from the direction of the tip of the arrow G in FIG. The figure which looked at the lamp | ramp 400 which uses the solid light emitting element which concerns on a 3rd modification as a light source from the right lateral direction. FIG. 9 is a cross-sectional view of the lamp 400 cut along the one-dot chain line HH ′ in FIG. The figure which looked at the lamp 500 which uses the solid light emitting element which concerns on the 4th modification as a light source from the right lateral direction FIG. 11 is a cross-sectional view of the lamp 500 taken along the alternate long and short dash line JJ ′ in FIG. 11 as viewed from the tip direction of the arrow K in FIG. The figure which looked at the lamp | ramp 600 which uses the solid light emitting element which concerns on a 5th modification as a light source from the right lateral direction. FIG. 12 is a view of a cross section of the lamp 600 cut along a one-dot chain line LL ′ in FIG. 13 as viewed from the tip direction of an arrow M in FIG. The figure which looked at the lamp | ramp 700 which uses the solid light emitting element which concerns on a 6th modification as a light source from the lateral direction. FIG. 15 is a cross-sectional view of the lamp 700 cut along the one-dot chain line NN ′ in FIG. 15 as viewed from the direction of the tip of the arrow O in FIG. The figure which looked at the lamp 800 which uses the solid light emitting element which concerns on a 7th modification as a light source from the right lateral direction. FIG. 17 is a cross-sectional view of the lamp 800 taken along the alternate long and short dash line PP ′ in FIG. 17 as viewed from the direction of the tip of the arrow Q in FIG. The figure which is the lamp | ramp 801 which replaced the elastic bodies 850a-b with another elastic body, and shows the cross section according to FIG. 17 is a diagram showing an example in which the elastic bodies 850a and 850b are replaced with an elastic body having good thermal conductivity, and shows a cross section according to FIG. The figure which looked at the lamp | ramp 900 which uses the solid light emitting element which concerns on a 9th modification as a light source from the lateral direction. The figure which looked at the lamp | ramp 1000 which uses the solid light emitting element concerning 2nd Embodiment as a light source from the light emission surface direction. FIG. 22 is a cross-sectional view of the lamp 1000 taken along the alternate long and short dash line R—R ′ in FIG. 22, as viewed from the side of the arrow S in FIG. 21. The figure which shows the cross section according to FIG. 23 which looked at the cross section of the lamp | ramp 1100 of a 10th modification from the right lateral direction. The figure which shows a mode that the film | membrane of the wavelength conversion member was formed in the inner wall of the housing | casing of the periphery of the position where a light emitting module is installed based on the lamp | ramp 100 of 1st Embodiment. The figure which shows a mode that the film | membrane of the wavelength conversion member was formed in the flat plate around the position where a light emitting module is installed based on the lamp | ramp 1000 of 2nd Embodiment.

[First Embodiment]
<Overview>
In the first embodiment, in a lamp having a simple basic structure, which includes a base, a casing, and a light emitting module, and which uses a solid light emitting element as a light source, the light emitting surface side of the light emitting module is closely attached to the inner surface of the casing. is there.
With such a configuration, heat dissipation can be improved with a simple structure and without adding an expensive configuration for heat dissipation, so that it is possible to suppress a decrease in luminous efficiency and a reduction in lamp life, An inexpensive lamp with low power consumption and long life can be provided.
Furthermore, the heat dissipation is improved by filling the gap between the housing and the light emitting module with a heat conductive material.

<Configuration>
FIG. 1 is a diagram illustrating an appearance of a lamp 100 that uses the solid-state light emitting device according to the first embodiment as a light source. FIG. 2 is a view of the lamp 100 of FIG. 1 as viewed from the lateral direction indicated by the arrow A in FIG. FIG. 3 is a view of the cross section of the lamp 100 taken along the alternate long and short dash line BB ′ in FIG. 2 as viewed from the direction of the arrow C in FIG.
As illustrated in FIGS. 1 to 3, the lamp 100 according to the first embodiment includes a base 110, a housing 120, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 120 and the light emitting module 130. Filled.

In the present embodiment, the type of lamp does not include a drive circuit in the housing, but the type of lamp may include a drive circuit built in the housing.
The base 110 is a portion that is formed of a structural material such as metal or resin and is attached to an external device when used, and includes electrodes 111 and 112 and lead wires 113 and 114. The portions of the electrodes 111 and 112 are made of a conductive material such as a metal, and the two electrodes must be insulated. The electrodes 111 and 112 are connected to the light emitting module 130 by lead wires 113 and 114, respectively, and are supplied with power.

  The housing 120 is a transparent case formed of a translucent material, and an opening portion is connected to the base 110. As these light-transmitting materials, for example, epoxy resin, glass, silicone resin, polycarbonate resin, acrylic resin, or the like may be employed. In the present embodiment, the casing 120 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and has a dome shape in which the lower bottom in the substantially columnar shape is an opening portion and the upper bottom is slightly expanded outward. The shape of the housing 120 is not limited to the above shape. For example, the body portion has a cross-sectional shape in a direction parallel to the upper base or the lower base, for example, a polygon other than a circle. They may be present, corners may be present, and curves and straight lines may be mixed.

The light emitting module 130 is a module for illumination in which one solid light emitting element such as an LED or an EL, or a plurality of solid light emitting elements are integrated into a unit. The light emitting module 13
0 may be a unitized LED or EL that emits a single color such as red, green, or blue, or may emit white or any other color by appropriately combining these LEDs or EL of each color. It may be a thing. In addition, the light emitting module 130 may be configured to mold a wavelength conversion member around the LED and emit white light or any other color. Here, the wavelength conversion member is a member containing a substance that absorbs light having a relatively short wavelength, such as blue light or ultraviolet light, and emits light having a wavelength longer than the absorbed light. YAG phosphor, silicate Inorganic phosphors such as phosphors and oxynitride phosphors, and ceramic phosphors obtained by sintering these inorganic phosphors are common, and rare earth doped glass phosphors, organic phosphors, and metal complexes There are phosphors and the like. For example, the light emitting module 130 may be a module that emits white light by molding a fluorescent material that converts blue into a complementary color of blue around an LED that emits blue light. Alternatively, the light emitting module 130 may be an LED that emits a single color, and a phosphor film may be formed in the main body of the housing 120 or on the surface of the main body to emit any color. An example in which the phosphor film is formed on the surface of the inner wall of the main body of the housing 120 will be described in detail in the following eleventh modification.
In addition, the light emitting module 130 may have a form in which a wavelength conversion member is mounted on a module substrate on which LED elements are primarily mounted, and a form in which a package made of LED elements and phosphors is secondarily mounted on a module substrate.
It is also possible to appropriately combine white LEDs having different color temperatures. It is also possible to perform toning on the black body locus.
4A, the light emitting module 130 includes a plurality of LED elements 132a to 132c mounted on a module substrate 131, and a wavelength conversion member in which a YAG phosphor or the like is dispersed in a silicone resin or the like. Each of the LED elements 132a to 132c may be sealed by 133a to 133c, or a plurality of LED elements 135a to 135f mounted on the module substrate 134 as shown in the sectional view of FIG. May be collectively sealed by the wavelength conversion member 136. As shown in FIG. 4B, diffused light is emitted when the sheet is collectively sealed in a planar shape.
Here, as the sealing material of the light emitting module 130, in addition to the silicone resin, fluorine resin, sol-gel glass, low melting point glass, and the like are conceivable. In particular, sol-gel glass and low-melting-point glass are excellent in heat resistance and light resistance because they are inorganic materials, and have an advantage in increasing output. Moreover, in order to improve thermal conductivity, thixotropy, and light diffusibility (color mixing of LED light and phosphor light), the sealing material has a light-transmitting metal oxide, nitride, carbide (silicon oxide, oxidation) Fine particles (titanium, zinc oxide, zirconium oxide, aluminum oxide, aluminum nitride, silicon nitride, boron nitride, silicon carbide, etc.) (nanoparticles of several nm to several hundred nm, and microparticles of several μm to several tens of μm) It is preferable to add.

  Here, the light emitting module 130 is installed on the inner wall of the housing 120 so that the main light emitting side (the lower side in FIGS. 1 to 3) is in close contact therewith. In addition, if the shape of the main light emission side of the light emitting module 130 and the shape of the inner wall of the housing 120 are both flat, for example, if the shapes of the contact portions of both are matched, nothing is done. Even if not, both can be brought into close contact with each other. However, in the present embodiment, the main light emission side of the light emitting module 130 is planar, but the inner wall of the housing 120 (inner circumference of the substantially cylindrical portion) is curved, so that the shapes of the contact portions of the two match. Without any change, there will be a gap. Therefore, the gap between them is filled with the heat conductive material 140 to bring them into close contact. Even when the shapes of both contact portions coincide with each other, if the space between them is filled with the heat conductive material 140, they can be brought into close contact with each other.

The heat conductive material 140 is a filler having both translucency and heat conductivity, such as silicon grease, and fills a gap between the housing 120 and the light emitting module 130. The heat conductive material 140 may be a silicon-based resin or a fluorine-based resin, and preferably has adhesiveness, adhesiveness, adhesiveness, and light resistance. Further, the heat conductive material 140 has a light-transmitting metal oxide, nitride, carbide (oxidation) in order to improve heat conductivity, thixotropy, and light diffusibility (color mixing of LED light and phosphor light). Fine particles of silicon, titanium oxide, zinc oxide, zirconium oxide, aluminum oxide, aluminum nitride, silicon nitride, boron nitride, silicon carbide, etc.) (nanoparticles of several nm to several hundred nm, and micrometers of several μm to several tens of μm) It is preferable to add fine particles).
In this embodiment, the gap between the housing 120 and the light emitting module 130 has the same shape as the cylindrical lens, and the heat conducting material 140 is filled in the gap to serve as a cylindrical lens, improving heat dissipation. In addition, the diffusibility can be improved. Note that various lenses having desired characteristics can be relatively easily formed by appropriately changing the shape of the gap or selectively using a material having an appropriate refractive index for the heat conducting material 140.

[First Modification]
<Overview>
In the first modification, the upper base of the substantially cylindrical housing is formed into a substantially flat plate, and the light emitting module is installed so that the main light emitting side is in close contact with the inner wall of the substantially flat upper plate.

<Configuration>
FIG. 5 is a view of the lamp 200 using the solid state light emitting device according to the first modification as a light source, as viewed from the lateral direction. FIG. 6 is a view of the cross section of the lamp 200 cut along the alternate long and short dash line DD ′ in FIG. 5 as viewed from the tip direction of the arrow E in FIG.
As shown in FIGS. 5 and 6, the lamp 200 according to the first modification includes a base 110, a housing 220, and a light emitting module 230.

5 and 6, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment.
The housing 220 is a case made of a light-transmitting material, like the housing 120 of the first embodiment, and the opening portion is connected to the base 110. In the first modification, the housing 220 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and the lower bottom of the substantially columnar shape has an opening portion, and the upper bottom has a substantially circular flat plate shape.
The light emitting module 230 differs from the light emitting module 130 of the first embodiment only in shape.

  Here, the light emitting module 230 is installed so that the main light emitting side (the right side in FIG. 5) is in close contact with the inner wall of the front end portion of the housing 220 (the substantially circular flat plate portion corresponding to the upper base). Here, since the shape of the main light emission side of the light emitting module 230 and the shape of the inner wall of the front end portion of the housing 220 are both planar, the heat conductive material 140 is not filled as in the first embodiment. However, it is possible to make them both in close contact. In addition, if the heat conductive material 140 is filled between both, both can be made to contact | adhere more and it can anticipate thermal conductivity improvement.

[Second Modification]
<Overview>
In the second modification, the inner surface of the upper base of the substantially cylindrical housing is flat, the outer surface is dome-shaped, a lens is formed at the tip, the light emitting module is closely attached to the inner wall of the lens, and the main light emitting side is in close contact It is to be installed.

<Configuration>
FIG. 7 is a diagram of a lamp 300 that uses a solid-state light emitting device as a light source according to a second modification as viewed from the side. FIG. 8 is a view of the cross section of the lamp 300 taken along the alternate long and short dash line FF ′ in FIG. 7 as viewed from the tip direction of the arrow G in FIG.
As shown in FIGS. 7 and 8, the lamp 300 according to the second modification includes a base 110, a housing 320, and a light emitting module 230.

7 and 8, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment and the lamp 200 according to the first modification.
The housing 320 is a transparent case formed of a translucent material, like the housing 120 of the first embodiment, and the opening portion is connected to the base 110. In the second modified example, the housing 320 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape. The lower bottom of the substantially columnar shape is an opening portion, and the upper bottom is a flat surface on the inner surface and a dome-shaped lens 321 on the outer surface. ing.

  Here, the light emitting module 230 is installed so that the main light emitting side (the right side in FIG. 7) is in close contact with the inner wall of the front end portion of the housing 320 (the lens portion corresponding to the upper base). Here, as in the first modification example, the shape of the main light emission side of the light emitting module 230 and the shape of the inner wall of the front end portion of the housing 320 are both planar, and therefore, as in the first embodiment. Even if it is not filled with the heat conductive material 140, the two can be brought into close contact with each other. In addition, if the heat conductive material 140 is filled between both, both can be made to contact | adhere more and it can anticipate thermal conductivity improvement.

[Third Modification]
<Overview>
In the third modification, a reflector is provided in the space in the housing, and the light toward the back side of the main light emitting side of the light emitting module is reflected to improve the luminance on the main light emitting side.

<Configuration>
FIG. 9 is a diagram of a lamp 400 that uses a solid state light emitting device according to a third modification as a light source, as viewed from the lateral direction. FIG. 10 is a view of the cross section of the lamp 400 cut along the alternate long and short dash line HH ′ in FIG. 9 as viewed from the tip direction of the arrow I in FIG. 9.
As illustrated in FIGS. 9 and 10, the lamp 400 according to the third modification includes a base 110, a housing 120, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 120 and the light emitting module 130. Further, a reflecting plate 450 is provided in a space in the housing 120 on the back side of the main light emitting side (the lower side in FIGS. 9 and 10) of the light emitting module 130.

9 and 10, the same reference numerals are given to components having the same functions as those of the components of the lamp 100 of the first embodiment.
The reflective plate 450 has a high reflectivity such as, for example, a material that has been improved in reflectivity by vapor-depositing aluminum on the surface of the molded resin, stainless steel with a mirror finish, or plated steel. Made of material.
Thus, by providing the reflecting plate 450, the light directed to the back side of the main light emitting side of the light emitting module 130 is reflected, and the luminance on the main light emitting side can be improved.

[Fourth Modification]
<Overview>
The fourth modification is adapted to E-type lamps such as sockets for light bulbs, and since the base is screwed, the light emission direction cannot be fixed, so a mechanism for adjusting the light distribution direction is added. It is a thing.

<Configuration>
FIG. 11 is a diagram of a lamp 500 that uses a solid-state light emitting device according to a fourth modification as a light source, as viewed from the side. FIG. 12 is a view of a cross section of the lamp 500 taken along the alternate long and short dash line JJ ′ in FIG. 11 as viewed from the tip direction of the arrow K in FIG.
As illustrated in FIGS. 11 and 12, the lamp 500 according to the fourth modification includes a base 510, a housing 520, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 520 and the light emitting module 130. In addition, a light distribution adjusting mechanism 550 is provided between the base 510 and the housing 520.

11 and 12, the same reference numerals are given to components having functions similar to those of the components of the lamp 100 of the first embodiment.
The base 510 is formed of a structural material such as metal or resin, and is a part attached to an external device when used. For example, the base 510 is a screw-type base of an E base type, and includes electrodes 511 and 512, a lead wire 513, 514. The portions of the electrodes 511 and 512 are made of a conductive material such as metal, and the two electrodes must be insulated. The electrodes 511 and 512 are connected to the light emitting module 130 by lead wires 513 and 514, respectively, and supplied with power.

  The housing 520 is a transparent case formed of a translucent material, and an opening portion is connected to the base 510. In the present embodiment, the housing 520 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and has a shape in which the lower bottom in the substantially columnar shape is an opening portion and the upper bottom is slightly inflated.

Here, the light emitting module 130 is installed on the inner wall of the housing 520 so that the main light emitting side (the lower side in FIGS. 11 and 12) is in close contact with each other, and details thereof are provided in the lamp 100 of the first embodiment. The relationship between the casing 120 and the light emitting module 130 is the same.
The light distribution adjusting mechanism 550 is configured to arbitrarily adjust the relative rotation angle between the base 510 and the housing 520 by about 360 degrees, and by rotating relatively many times, the lead wire 513, A stopper (not shown) for preventing over-rotation is provided so that 514 is not disconnected.
The lead wires 513 and 514 are each coated so as to withstand twisting due to relative rotation between the base 510 and the housing 520, and the central portion is gathered, and the gathered portion has a coil shape.
In this way, in the case of a screw-type base such as the base 510, the light emitting module 130 does not necessarily face the direction in which it is desired to irradiate when attached to a lighting fixture. An adjustment mechanism 550 is provided to adjust the light distribution direction.

[Fifth Modification]
<Overview>
In the fifth modification, the drive circuit is installed in the housing together with the light emitting module so as to be in close contact with the inner wall of the housing.

<Configuration>
FIG. 13 is a diagram of a lamp 600 that uses a solid-state light emitting device according to a fifth modification as a light source, as viewed from the side. 14 is a view of a cross section of the lamp 600 taken along the alternate long and short dash line LL ′ in FIG. 13 as viewed from the tip direction of the arrow M in FIG.
As illustrated in FIGS. 13 and 14, the lamp 600 according to the fifth modification includes a base 110, a housing 120, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 120 and the light emitting module 130. The housing 120 is further provided with a drive circuit 650.

13 and 14, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment.
The drive circuit 650 is an electronic circuit that outputs power suitable for lighting the light emitting module 130. For example, when a general household power supply (AC100V or AC200V) is input, the drive circuit 650 is a rectifier diode, an inductor, or the like. For example, when a DC power supply (DC6V, 12V, or 24V, etc.) is input, a primary circuit element such as a capacitor or an inductor, and a switching transistor are included. Including.

Here, in the present modification, the light emitting module 130 is installed so that the main light emitting side (the lower side in FIGS. 13 and 14) is in close contact with the inner periphery of the substantially cylindrical body portion of the housing 120. The drive circuit 650 is installed in the farthest place (upper side in FIGS. 13 and 14) in the inner circumference facing the light emitting module 130.
In this manner, by installing the light emitting module 130 and the drive circuit 650 at positions facing each other, the heat source can be separated, and heat can be efficiently radiated to the outside by the housing.

[Sixth Modification]
<Overview>
In the sixth modified example, the casing is sealed, the light emitting module is installed inside the sealed casing, and an inert gas is filled.

<Configuration>
FIG. 15 is a diagram of a lamp 700 that uses a solid-state light emitting device as a light source according to a sixth modification as viewed from the side. FIG. 16 is a view of a cross section of the lamp 700 taken along the alternate long and short dash line NN ′ in FIG. 15 as viewed from the direction of the arrow O in FIG.
As illustrated in FIGS. 15 and 16, the lamp 700 according to the sixth modification includes a base 110, a housing 720, and a light emitting module 130, and a heat conductive material 140 is provided in a gap between the housing 720 and the light emitting module 130. In addition, the housing 720 is sealed and filled with an inert gas 721. Here, in FIG. 15, the place filled with the inert gas 721 is shaded for convenience.

15 and 16, the same reference numerals are given to components having the same functions as the components of the lamp 100 of the first embodiment.
The housing 720 is a transparent case formed of a light-transmitting material, and is sealed with the light emitting module 130 installed therein, and the sealed side is connected to the base 110. Further, the inside and outside of the housing 720 are electrically connected so that the lead wires 113 and 114 can supply power to the internal light emitting module 130, and an inert gas such as nitrogen gas is further provided inside the housing 720. Is filled. In this modification, the housing 720 has a substantially cylindrical shape with a body portion having a substantially cylindrical shape, and has a lower dome shape in a substantially cylindrical shape as a sealing portion, and has a dome shape in which the upper bottom is slightly inflated.

Here, the light emitting module 130 is installed on the inner wall of the housing 720 so that the main light emitting side (the lower side in FIGS. 15 and 16) is in close contact with the lamp 100 of the first embodiment. The relationship between the casing 120 and the light emitting module 130 in FIG.
As described above, the light emitting module 130 is sealed in the housing 720 and filled with the inert gas 721, whereby the durability and reliability of the light emitting module 130 can be significantly improved.

[Seventh Modification]
<Overview>
In the seventh modification, the light emitting module is pressed against the inner wall of the casing with an elastic body, thereby maintaining the degree of adhesion between the light emitting module and the casing. A plurality of light emitting modules are provided inside the casing. When installing, the elastic body simultaneously presses the plurality of light emitting modules against the inner wall of the casing.

<Configuration>
FIG. 17 is a view of a lamp 800 that uses a solid-state light emitting device as a light source according to a seventh modification as seen from the side. 18 shows the lamp 8 cut along the alternate long and short dash line PP ′ in FIG.
It is the figure which looked at the cross section of 00 from the front-end | tip direction of the arrow Q in FIG.
As illustrated in FIGS. 17 and 18, the lamp 800 according to the seventh modification includes a base 110, a housing 120, and light emitting modules 130 a to d, and heat is provided in the gaps between the housing 120 and the light emitting modules 130 a to 130 d. Conductive materials 140a to 140d are filled, and the housing 120 is further provided with elastic bodies 850a to 850b.
17 and 18, the same reference numerals are given to components having the same functions as those of the components of the lamp 100 of the first embodiment.
The lead wires 113a to 113d and 114a to 114d have the same functions as the lead wires 113 and 114 of the first embodiment, respectively.
Each of the light emitting modules 130a to 130d has a function similar to that of the light emitting module 130 of the first embodiment.

Here, the electrodes 111 and 112 are respectively connected to the light emitting module 130a by lead wires 113a and 114a, are connected to the light emitting module 130b by lead wires 113b and 114b, and are connected to the light emitting module 130c by lead wires 113c and 114c. The light emitting module 130d is connected by lines 113d and 114d.
Each of the heat conductive materials 140a to 140d has a function similar to that of the heat conductive material 140 of the first embodiment.
Here, the light emitting modules 130a to 130d are installed on the inner wall of the housing 120 so that the main light emitting side (the lower side in FIGS. 17 and 18) is in close contact, and details thereof are the same as those in the first embodiment. The relationship between the casing 120 and the light emitting module 130 in the lamp 100 is the same.
Further, the heat conductive material 140a fills the gap between the housing 120 and the light emitting module 130a, the heat conductive material 140b fills the gap between the housing 120 and the light emitting module 130b, and the heat conductive material 140c emits light from the housing 120. The gap between the module 130c is filled, and the gap between the heat conductive material 140d casing 120 and the light emitting module 130d is filled.

The elastic bodies 850a and 850b are ring-shaped springs or rubbers having elastic force, and the main light emission of the light emitting modules 130a to 130d is so pressed that the main light emission side of the light emitting modules 130a to 130d is in pressure contact with the inner wall of the housing 120. Press the back of the side toward the main light emission side.
In this modified example, the elastic bodies 850a to 850b simultaneously press four light emitting modules toward the main light emitting side, but the modified example can be applied to any number of light emitting modules. For example, when there is one light emitting module, one light emitting module is pressed toward the main light emitting side.

FIG. 19 shows a lamp 801 in which the elastic bodies 850a and 850b are replaced with other elastic bodies, and shows a cross section similar to FIG.
As shown in FIG. 19, the lamp 801 includes an elastic body 851 instead of the elastic bodies 850 a and 850 b of the lamp 800.
The elastic body 851 is a mounting bracket for a light emitting module made of a metal or resin in which a spring having elastic force intersects the cross, and the back side of the main light emitting side of each of the light emitting modules 130a to 130d is subjected to main light emission. Press toward the side.

  In this manner, the light emitting modules 130a to 130d and the housing are formed by pressing the light emitting modules 130a to 130d against the inner wall of the housing 120 by the elastic bodies 850a to 850b and the elastic body 851. The degree of adhesion with 120 can be maintained.

[Eighth Modification]
<Overview>
In the eighth modification, the elastic bodies 850a and 850b of the seventh modification are replaced with elastic bodies having good thermal conductivity, and the light emitting module is thermally coupled.

<Configuration>
FIG. 20 is an example in which the elastic bodies 850a and 850b are replaced with an elastic body having good thermal conductivity, and is a view showing a cross section according to FIG.
As illustrated in FIG. 20, a lamp 802 according to the eighth modification includes an elastic body 852 instead of the elastic bodies 850 a and 850 b of the lamp 800.
In FIG. 20, the same reference numerals are given to components having the same functions as those of the lamp 100 of the first embodiment and the lamp 800 of the seventh modified example.

The elastic body 852 is a ring-shaped spring, rubber, or the like having an elastic force, and its thermal conductivity is enhanced by using a large amount of metal such as aluminum or increasing the volume.
In this modification, the elastic body 852 simultaneously presses four light emitting modules toward the main light emitting side and thermally couples the four light emitting modules, but the number of light emitting modules is two or more. If so, this modification can be applied.
As described above, the elastic body 852 thermally couples the plurality of light emitting modules 130a to 130d, so that variation in temperature between the light emitting modules can be reduced and variation in emission color can be suppressed.

[Ninth Modification]
<Overview>
The ninth modified example shows an application example to a straight pipe and a double cap type.
<Configuration>
FIG. 21 is a diagram of a lamp 900 that uses a solid-state light emitting device according to a ninth modification as a light source, as viewed from the side.
As shown in FIG. 21, the lamp 900 according to the ninth modification includes bases 110a to 110b, a casing 320, and n light emitting modules 931, 932,. .., 93n are filled with n thermal conductive materials 941, 942,..., 94n, respectively, in the gaps between the light emitting modules 931, 932,. Here, n is an integer of 2 or more.

  The bases 110a to 110b are parts formed of a structural material such as metal or resin, and are attached to an external device when used. The bases 110a to 110b include electrodes 111a to b and 112a to b and lead wires 113e to f and 114e to f. . The portions of the electrodes 111a-b and 112a-b are made of a conductive material such as metal, and the two electrodes must be insulated. The electrodes 111a and 112a are connected to the light emitting module 931 through lead wires 113e and 114e, respectively, and the electrodes 111b and 112b are connected to the light emitting module 93n through lead wires 113f and 114f, respectively, and supplied with power. Adjacent light emitting modules are connected by connecting lead wires.

The housing 920 is a transparent case formed of a translucent material, like the housing 120 of the first embodiment, and two opening portions are connected to the caps 110a and 110b, respectively. In the ninth modified example, the housing 920 has a substantially cylindrical shape with a body portion being a substantially cylindrical shape, and the upper bottom and the lower bottom in the substantially columnar shape are respectively open portions.
Here, the light emitting modules 931, 932,..., 93n are installed on the inner wall of the housing 920 so that the main light emitting side (the lower side in FIG. 21) is in close contact with each other. This is the same as the relationship between the housing 120 and the light emitting module 130 in the lamp 100 of the embodiment.

<Summary>
As described above, in each of the lamps using the solid light emitting element as the light source in the first embodiment and the first to ninth modifications, the light emitting module is installed on the inner wall of the housing with the main light emitting side in close contact. As a result, heat generated due to the light emitting module can be released to the housing and radiated from the surface of the housing to the outside without providing a special structure such as a heat sink or a fan for heat dissipation. .
Therefore, according to the above configuration, since the heat dissipation can be improved while the structure is simple and inexpensive, it is necessary to ensure the luminous efficiency and life characteristics without using a metal heat dissipation member. Heat dissipation characteristics can be obtained.

[Second Embodiment]
<Overview>
In the second embodiment, a light emitting module is installed on a main surface of a flat plate made of a light-transmitting material so that the main light emitting side is in close contact, and heat generated due to the light emitting module is released to the flat plate, and the surface of the flat plate is exposed to the outside. To dissipate heat.

<Configuration>
FIG. 22 is a view of the lamp 1000 using the solid-state light emitting device according to the second embodiment as a light source, as viewed from the light emitting surface direction. FIG. 23 is a view of the cross section of the lamp 1000 taken along the alternate long and short dash line RR ′ in FIG. 22 as seen from the direction lateral to the arrow S in FIG.
As shown in FIGS. 22 and 23, the lamp 1000 according to the second embodiment includes a flat plate 1010, a light emitting module 1020, a drive circuit 1030, and a heat sink 1040.

In the present embodiment, the type of lamp is provided with a drive circuit, but a type of lamp without a drive circuit may be used.
The flat plate 1010 is a flat plate-shaped light-transmitting plate formed of a light-transmitting material, and is directly attached to the lighting fixture as a front panel of the lighting fixture when the lamp 1000 is used.

  The light emitting module 1020 is composed of one or a plurality of solid state light emitting elements, and the main light emitting side (the upper side in FIG. 23) is the back surface (the lower surface in FIG. 23) of the surface to be the light emitting surface of the flat plate 1010. It is installed in close contact. The light emitting module 1020 has the same function as the light emitting module 130 of the first embodiment, and only the shape is different. In the present embodiment, the light emitting module 1020 has a plate shape with a square light emitting surface.

Similar to the drive circuit 650 described in the fifth modification, the drive circuit 1030 is an electronic circuit that outputs electric power suitable for lighting the light emitting module 1020 to drive the solid light emitting element to emit light, and the lead wire 1031. 1032 and installed at a position that does not overlap with the flat plate 1010 when viewed from the light emitting surface direction.
The heat radiating plate 1040 fixes the flat plate 1010 and the light emitting module 1020 with a thermally conductive adhesive or adhesive, and simultaneously absorbs heat generated by the light emitting module 1020 and dissipates it into the atmosphere. .

Here, the light emitting module 1020 is installed so that the main light emitting side (the lower side in FIG. 23) is in close contact with the center of the back surface of the flat plate 1010. Here, since the shape of the main light emission side of the light emitting module 1020 and the shape of the back surface of the flat plate 1010 are both planar, both of them can be filled without the thermal conductive material 140 as in the first embodiment. Can be almost adhered. If a filler having both translucency and thermal conductivity such as the thermal conductive material 140 is filled between the two, the two can be brought into close contact with each other, and improvement in thermal conductivity can be expected.
Note that it is not always necessary to use the drive circuit 1030 and the heat sink 1040 in the lamp 1000, and the object of the present application can be achieved even when these configurations are not provided.

[Tenth Modification]
<Overview> The tenth modification is a configuration in which the flat plate 1010 is removed from the lamp 1000 of the second embodiment, and is used by being attached to a panel made of a light-transmitting material included in any appropriate external device. belongs to.

<Configuration>
FIG. 24 is a view showing a cross section similar to FIG. 23, as seen from the right lateral direction, of the lamp 1100 of the tenth modification.
As shown in FIG. 24, a lamp 1100 according to the tenth modification includes a light emitting module 1120, a drive circuit 1130, and a heat sink 1140.
In FIG. 24, the same reference numerals are given to components having the same functions as those of the components of the lamp 1000 of the second embodiment.

  The light emitting module 1120 includes one or a plurality of solid state light emitting elements, and the main light emitting side (the upper side in FIG. 24) is in close contact with the panel when the heat sink 1140 is attached to the panel of an arbitrary external device. In this way, it is fixed to the heat sink 1140. Further, when a heat conductive material 1121 having both translucency and heat conductivity is applied to the main light emitting side of the light emitting module 1120 and attached to a panel of an arbitrary external device, the panel and the light emitting module 1120 The gap is filled with the heat conductive material 1121.

  Similar to the drive circuit 650 described in the fifth modification, the drive circuit 1130 is an electronic circuit that outputs power suitable for lighting the light emitting module 1120 to drive the solid light emitting element to emit light, and the lead wire 1131. 1132, when the heat radiating plate 1140 is attached to a panel of an external device having a general size, the heat radiating plate 1140 is arranged at a position that is so far away that it cannot be seen through the panel.

The heat radiating plate 1140 fixes the light emitting module 1120 with a thermally conductive adhesive or adhesive material, and simultaneously absorbs heat generated by the light emitting module 1120 and dissipates it into the atmosphere. Moreover, in this embodiment, since the adhesive or adhesive 1141 which has heat conductivity is made to adhere to the part attached to the panel of an external device of the heat sink 1140, both can be made to contact | adhere more and heat. An improvement in conductivity can be expected.
Note that it is not always necessary to use the driver circuit 1130 in the lamp 1100, and the object of the present application can be achieved even when these configurations are not provided.

<Summary>
As described above, the lamps of the second embodiment and the tenth modification, each having a solid light emitting element as a light source, are installed with a light emitting module on a flat plate, with the main light emitting side in close contact with each other. The heat generated due to the light emitting module can be released to the flat plate and radiated from the surface of the flat plate to the outside.
Therefore, according to the said structure, heat dissipation can be improved, being a structure with simple structure and cheap.

[Eleventh Modification]
<Overview>
In the eleventh modification, the light emitting module is installed on the inner surface of the casing of the translucent material and the main surface of the flat plate with the main light emitting side in close contact, and the wavelength conversion member is installed at the position where the light emitting module is installed. A film is formed, and heat generated from the phosphor film is directly transmitted to the casing and the flat plate.

<Configuration>
FIG. 25 is a diagram illustrating a state in which a film of a wavelength conversion member is formed on the inner wall of the casing around the position where the light emitting module is installed, based on the lamp 100 of the first embodiment. FIG. 25 shows the first
In FIG. 3 of this embodiment, this corresponds to an enlarged view of the vicinity of the position where the light emitting module is installed. Here, the difference between FIG. 25 and FIG. 3 is only that the film 122 of the wavelength conversion member is formed at the position where the light emitting module is installed in the housing main body 121.

FIG. 26 is a diagram illustrating a state in which the film of the wavelength conversion member is formed on the flat plate around the position where the light emitting module is installed, based on the lamp 1000 of the second embodiment.
FIG. 26 corresponds to an enlarged view of the vicinity of the position where the light emitting module is installed in FIG. 23 of the second embodiment. Here, the difference between FIG. 26 and FIG. 23 is only that the wavelength conversion member film 1012 is formed at the position where the light emitting module is installed in the flat plate body 1011.
In this way, by integrating the film of the wavelength conversion member into the housing and the flat plate, the amount of heat from the film of the wavelength conversion member that generally generates a large amount of heat can be efficiently radiated from the housing and the flat plate to the outside. Heat dissipation efficiency can be increased.
Translucent materials can be made of translucent hard and brittle materials such as glass, so that the thermal conductivity and heat radiation can be increased, and by using materials such as resins, they can be easily damaged. Is also possible.
<Examination of effect>
Here, the grounds for ensuring heat dissipation by the casing formed of the translucent material are shown below.
For example, the thermal conductivity of glass, which is one of translucent materials, is two to three orders of magnitude lower than that of metal, but is about one order of magnitude higher than that of resin.
The main materials have thermal conductivity of aluminum 240, copper 400, iron 80, glass 1, acrylic resin 0.2, polycarbonate resin 0.2, epoxy resin 0.2, polystyrene resin 0.1 (the unit is [ W / m · K]).
In the case of the present application, since the casing occupies most of the outer shape of the lamp, a large envelope volume can be secured, and if the casing is made of glass, the emissivity is close to 1, and thus high heat dissipation characteristics can be secured.
The thermal emissivity (ratio of black body radiation to 1) of the main substances is glass 0.9, aluminum (non-oxidized surface) 0.2, aluminum (oxidized surface) 0.4 (all units are anonymous [- ]).
Further, for example, the thermal conductivity of ceramics, which is one of translucent materials, is comparable to an order of magnitude lower than that of metal (aluminum nitride ceramic 150, alumina 20 (unit is [W / m · K] )) And the thermal emissivity is close to blackbody radiation (ceramics 0.9 (unit: anonymous [-])).
Therefore, in the case of the present application, if the housing is ceramic, the emissivity is higher than that of glass, so that higher heat dissipation characteristics can be ensured.

  The lamp of the present invention allows heat generated due to the light emitting module to escape to the housing and dissipates heat from the surface of the housing to the outside. Therefore, the lamp can be applied to all lighting devices such as general household lighting and outdoor lights. In particular, the lamp of the present invention is highly reliable because it can improve heat dissipation while avoiding a reduction in luminous efficiency or shortening the life of the lamp while having a simple structure and an inexpensive configuration. Its industrial use value is extremely high.

100 Lamp 110 Base 111, 112, 111a-b, 112a-b Electrode 113, 114, 113a-f, 114a-f Lead wire 120 Housing 121 Housing body 122 Membrane 130, 130a-d Light emitting module 140, 140a-d Thermal conductive material 200 Lamp 220 Case 230 Light emitting module 300 Lamp 320 Case 321 Lens 400 Lamp 450 Reflector 500 Lamp 510 Base 511, 512 Electrode 513, 514 Lead wire 520 Case 550 Light distribution adjusting mechanism 600 Lamp 650 Drive circuit 700 Lamp 720 Housing 721 Inert gas 800, 801, 802 Lamp 850a-b, 851, 852 Elastic body 900 Lamp 920 Housing 931, 932,..., 93n Light emitting module 941, 942,. n thermally conductive material 1000 lamp 1010 flat 1011 flat body 1012 film 1020 emitting module 1030 driving circuit 1040 radiating plate 1100 lamp 1120 emitting module 1121 thermal material 1130 driving circuit 1131 and 1132 lead 1140 radiating plate 1141 adhesive, or pressure-sensitive adhesive

Claims (17)

A lamp using a solid light emitting element as a light source,
A base attached to an external device when used;
A casing made of a light-transmitting material and connected to the base;
A lamp comprising: a light-emitting module including one or a plurality of solid-state light-emitting elements and installed so that a main light-emitting side is in close contact with an inner wall of the housing.   The lamp according to claim 1, wherein a gap between the housing and the light emitting module is filled with a heat conductive material having both translucency and heat conductivity. The shape of the portion where the light emitting module is installed on the surface of the housing is a curved surface,
The shape of the main light emitting side of the light emitting module is a plane,
The heat conducting material is
The lamp according to claim 2, wherein the lamp serves as a lens by filling a gap between the housing and the light emitting module.   The lamp according to claim 1, wherein a film of a wavelength conversion member is formed at least on a portion of the housing where the light emitting module is installed. The lamp further includes
The lamp according to claim 1, further comprising a reflecting plate in a space inside the housing on the back side of the main light emitting side of the light emitting module. The lamp further includes
An elastic body is provided in the housing for pressing the back side of the main light emitting side of the light emitting module in the direction of the main light emitting side so that the main light emitting side of the light emitting module is pressed against the inner wall of the housing. The lamp according to claim 1. The lamp includes a plurality of the light emitting modules,
The elastic body is
The lamp according to claim 6, wherein a plurality of the light emitting modules are simultaneously pressed toward the main light emitting side. The elastic body is
The lamp according to claim 7, wherein the lamp is installed so as to be in close contact with a back side of each of the plurality of light emitting modules, and the plurality of light emitting modules are thermally coupled.   The lamp according to claim 1, wherein the casing is sealed, and the light emitting module is installed in the sealed interior and is filled with an inert gas. The lamp further includes
A driving circuit that is installed so as to be in close contact with the inner wall of the housing and drives the solid-state light emitting element to emit light;
The housing has a substantially cylindrical portion,
The lamp according to claim 1, wherein the light emitting module and the drive circuit are installed at positions facing each other on an inner periphery of the substantially cylindrical portion. A lamp module having a solid light-emitting element as a light source, and a flat plate made of a light-transmitting material having a flat plate shape, which is directly attached to the lighting fixture as a front panel of the lighting fixture when used;
A lamp module comprising: a light emitting module comprising one or a plurality of solid state light emitting elements, the main light emitting side of which is installed so as to be in close contact with the back surface of the flat light emitting surface.   The lamp module according to claim 11, wherein a gap between the flat plate and the light emitting module is filled with a heat conductive material having both translucency and heat conductivity.   The lamp module according to claim 11, wherein a film of a wavelength conversion member is formed on a portion of the flat plate where the light emitting module is installed. A lamp module using a solid light emitting element as a light source,
A heat-radiating plate attached to the back surface of the light-emitting surface of the panel made of a light-transmitting material provided in the external device, and
A light-emitting module comprising one or a plurality of solid-state light-emitting elements and fixed to the heat-radiating plate so that the main light-emitting side of the solid-state light-emitting element is in close contact with the panel when the heat-radiating plate is attached to the panel; A lamp module comprising: The lamp module further includes:
The lamp module according to claim 14, wherein a heat conductive material having both translucency and heat conductivity is disposed on a surface on a main light emission side of the light emitting module. The lamp module further includes:
The lamp module according to claim 15, wherein an adhesive or a pressure-sensitive adhesive having thermal conductivity is provided on a portion of the heat radiating plate attached to the panel. The lamp module further includes
15. The apparatus according to claim 14, further comprising a driving circuit that is disposed at a position where the heat radiating plate is not visible through the panel when the heat radiating plate is attached to the panel, and drives the solid state light emitting element to emit light. lamp.

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